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Born:January 25,1627,Lismore.
Died:December 31, 1691,London,United Kingdom.
Robert Boyle was an Anglo~Irish natural Philosopher,chemist,physicist, alchemist and inventor. Today he is regarded as the first modern chemist.

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Born:September 6, 1766, Eaglesfield,United Kingdom.
Died:July 27, 1844, Manchester,United Kingdom.
John Dalton was an English chemist, physicist and meteorologist.

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He is known for his Law of Gases.In 17th~century he was pioneer of modern chemistry. He discovered the volume of a gas decreases with increasing pressure and vice versa.

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Songs of Hope vlog links: 1. Christian News Bulletin http://bit.ly/1nFLUDW 2. Life stories of Christians http://bit.ly/1SF0abA 3. Prayers http://bit.ly/208aFF0 4. All videos http://bit.ly/1Ss17pz This audio is a podcast from a Christian radio program in Australia. The radio program is Songs of Hope, and the radio station it is broadcast from is Southern FM 88.3, located in Brighton, Melbourne.

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Born:
December 17, 1778, Penzance, United Kingdom
Died:May 29th,1829,Geneva switzerland
Sir Humphry Davy, 1st Baronet, PRS, MRIA, FGS was a British chemist and inventor from Cornwall who invented the Davy lamp and a very early form of arc lamp.

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color blindness
John Dalton was the first scientist to take academic interest in the subjects of color blindness.
His interest sparked by the fact that he and his brother are color blind .
According to John Dalton, the lack of color vision was brought on by the aqueous humor ,the eyeball's clear liquid medium,becoming discolored .

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In 1807 Sir Humphry Davy discovered the element potassium which is why his image was included. The experiment shown at the bottom of the artwork is the reaction of potassium and water forming potassium hydroxide and hydrogen gas.

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Born:November 26,1837, Lambeth, London, United Kingdom
Died:Jly 29,1898,, Lower Clapton, London, United Kingdom
His father taught him at home, and he later attended the Royal College of Chemistry, which is now a part of Imperial College London. He had a passion for social reform and joined Giuseppe Garibaldi in his military effort to unify Italy in 1860 as a volunteer. In 1864, Newlands established himself as an analytical chemist after returning to London. He was appointed chief chemist of James Duncan's London sugar factory in 1868, where he made a number of processing advancements. Later, he left the refinery and joined his brother Benjamin as an analyst once more.

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John Newlands wrote a paper that would become known as "The Law of Octaves" on February 7, 1863. Newlands determined that the chemical characteristics of the elements would be comparable for every eighth group if he arranged the known elements by increasing atomic weight. He dubbed his periodic law the "Law of Octaves" since this pattern appeared to follow the same pattern as the piano's octaves.

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Born: 13 December 1780 hof, Principality of Bayreuth.
Died: 24 March 1849 ,Germany ,aged 68.
His was a German scientist best Known for developing the first lighter,known as the Dobereiner's lamp ,and for his work that anticipated the periodic rule for chemical elements.
At the university of lena, he was appointed a professor of chemistry and pharmacy.

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Born: June 17, 1832, London, United Kingdom

Died: April 4, 1919, London, United Kingdom
British scientist and physicist Sir William Crookes OM PRS studied at the Royal College of Chemistry, which is now a division of Imperial College London, and focused on spectroscopy. He was a pioneer in the field of vacuum tubes, creating the Crookes tube in 1875.

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He is credited for using spectroscopy to find the element thallium, which was announced in 1861. In 1865, he was the first to characterize the range of terrestrial helium. The Crookes radiometer was created by Crookes, who failed to understand the true cause of the anomaly he observed. Crookes also created a sunglass lens that completely blocks UV rays. He was intrigued with spiritualism for a while and was elected president of the Society for Psychical Research.

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Dobereiner discovered groups of elements having related chemical characteristics in 1829. He referred to these families as triads since there always seemed to be three components in them.

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Born:February 8, 1834, Tobolsk, Russia

Died: February 2, 1907, Saint Petersburg, Russia
Chemist and inventor Dmitri Ivanovich Mendeleev was from Russia. The Periodic Law and a modified version of the periodic chart of elements were two of his most famous creations.

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Born：30 August 1871

Brightwater, Colony of New Zealand

Died：19 October 1937 (aged 66)

Cambridge, England

Ernest Rutherford, 1st Baron Rutherford of Nelson. (30 August 1871 – 19 October 1937) he was a New Zealand physicist who came to be known as the father of nuclear physics.

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Ernest Rutherford discovered the nucleus of the atom in 1911.

He found that the atom is mostly empty space, with nearly all of its mass concentrated in a tiny central nucleus. The nucleus is positively charged and surrounded at a great distance by the negatively charged electrons.

And then Rutherford's gold foil experiment showed that the atom is mostly empty space with a tiny, dense, positively-charged nucleus. Based on these results, Rutherford proposed the nuclear model of the atom.

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Born：March 22, 1868 Morrison, Illinois, U.S.

Died ：December 19, 1953 (aged 85)

San Marino, California, U.S.

He was an American experimental physicist honored with the Nobel Prize for Physics in 1923 for the measurement of the elementary electric charge and for his work on the photoelectric effect.

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The oil drop experiment was performed by Robert A. Millikan and Harvey Fletcher in 1909 to measure the elementary electric charge (the charge of the electron).

The purpose of this experiment is to measure the electrical charge of a single electron. The method focuses on balancing gravity and electricity so that the oil droplet is suspended between two metal electrodes. The total charge of the whole oil droplet is also calculated from the known electric field strength.

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Born:23 November 1887 England

Died: 10 August 1915 (aged 27)

He was an English scientist whose contribution to physics was the physical laws' justification of the atomic number's earlier empirical and chemical concepts. This came about as a result of his creation of Moseley's law in X-ray spectra.

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He used diffraction in crystals to see and analyze the X-ray spectra of numerous chemical elements in 1913 while working at the University of Manchester. He thus discovered a systematic relationship between atomic number and wave length. Moseley's Law is the name given to this discovery today.

Prior to Mosley's work, "atomic number" was simply the position of an element in the periodic table and was not known to be associated with any measurable physical quantity.

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Born :7 October 1885

Copenhagen, Denmark

Died: 18 November 1962 (aged 77)

Copenhagen, Denmark

He was a Danish physicist who contributed significantly to the understanding of atomic structure and quantum theory. He was awarded the Nobel Prize in Physics in 1922 for his work in these fields. Bohr was a philosopher and an advocate for scientific investigation.

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Bohr was the first to realize that electrons move in different orbits around the nucleus and that an element's properties are determined by the amount of electrons in its outer orbit. He has the name of the chemical element bohrium (Bh), which appears at position 107 on the periodic table.

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Born： 20 October 1891 Bollington, Cheshire, England

Died：24 July 1974 (aged 82)

Cambridge, England

He was an English physicist who, after discovering the neutron in 1932, received the 1935 Nobel Prize in Physics. He completed the MAUD Report's final draft in 1941, which prompted the American government to launch significant atomic bomb research initiatives. During World War II, he served as the leader of the British team that worked on the Manhattan Project. In 1945, he received a knighthood in Britain for his contributions to physics.

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In the field of nuclear research, Chadwick made a crucial discovery in 1932 when he established the existence of neutrons, elementary particles devoid of any electrical charge. This novel weapon for atomic disintegration does not have to cross any electric barriers in order to penetrate and split the nuclei of even the heaviest elements, unlike helium nuclei (alpha rays), which are charged and repelled by the strong electrical forces present in the nuclei of heavy atoms. Chadwick paved the way for uranium 235 fission and the development of the atomic bomb in this fashion. He received the Hughes Medal of the Royal Society in 1932 and the Nobel Prize for Physics in 1935 for this groundbreaking discovery.

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John Dalton: First Scientist to Study Color Blindness | Biography

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John Dalton and Color Blindness | Episode 9 History of Optometry

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Trick to learn Doberenier Triad / dobereiner's law of triads / NEET chemistry video lecturer

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RutherfordÂ s gold foil experiment | Electronic structure of atoms | Chemistry | Khan Academy

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Charge of an Electron: Millikan's Oil Drop Experiment

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Atomic Number | Atoms and Molecules | Don't Memorise

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This is a SUPER easy guide on Bohrium element.

In fact, the table mentioned below is the perfect information box (Which gives you every single detail about the Bohrium element in Periodic table.)

So if you want to know anything about Bohrium element, then this guide is for you.

Let's dive right into it!

Bohrium Element (Bh) Information

Bohrium in Periodic table
Click on above elements (in Periodic table) to see their information or Visit Interactive Periodic Table (which shows names, symbol, atomic mass, electron configuration, electrons arrangement, etc. of all the elements) Click on above elements (in Periodic table) to see their information
←Move to: Seaborgium (Sg) element - Periodic Table
→Move to: Hassium (Hs) element - Periodic Table

Why is Bohrium in Period 7?

Let me ask you a question.

How many shells does a bohrium atom have?

It's 7. Right?

You have already seen the bohr model of bohrium atom in the above table.
From the Bohr model, it can be found that the number of orbits or shells in bohrium is 7. Hence, as bohrium has 7 orbits, it lies in period 7 of the Periodic table.
Why is Bohrium in d-block?

Before knowing this reason, first of all I want to ask you a simple question.

How can you determine the blocks-wise position of elements?

The simple answer: The elements will lie in the s, p, d or f block will completely depend upon the subshell in which the last electron will enter.

For example; the electron configuration of bohrium is [Rn] 5f ¹⁴ 6d ⁵ 7s ².

So the last electron of bohrium enters the d-subshell or d-orbital.

Hence, bohrium is the d-block element.

5 facts about Bohrium

Interesting facts about bohrium element are mentioned below.

1. The element was given the name "Bohrium" to honor the physicist Neils Bohr.

2. Bohrium element was discovered by Peter Armbruster and his team in 1981, at Darmstadt, Germany.

3. Bohrium is not found naturally, but it is artificially prepared in the laboratory.

4. There are around 12 isotopes of bohrium and all are radioactive in nature.

5. The most stable isotope of bohrium is ²⁷⁰Bh, which has a half life of only 61 seconds.

Properties of Bohrium

The physical and chemical properties of bohrium element are mentioned below.

Bohrium is a radioactive element which has a very short half life (few seconds).

Bohrium is expected to have a solid phase at STP.

The calculated atomic mass of the most stable isotope of bohrium is 270 u and its density is predicted to be 26-27 g/cm³.

The predicted crystal structure of bohrium is HCP (i.e hexagonal close packed).

The common oxidation state of bohrium is expected to be +7, but it may show other oxidation states like +3, +4 and +5.

Uses of Bohrium

Bohrium is generally used for research work in chemistry. There is no commercial use of bohrium due to its radioactive nature and very little half-life.

Free Gift for you: Interactive Periodic Table

Let me tell you how this Interactive Periodic Table will help you in your studies.

You can effortlessly find every single detail about the elements from this single Interactive Periodic table.

(For Interactive Periodic table, view on laptop/desktop for better experience. If you are on mobile device, then use a "Desktop site mode" to see interactive periodic table)

2). You will get the detailed information about the periodic table which will convert a newbie into pro.

3). You will also get the HD images of the Periodic table (for FREE).

Checkout Interactive Periodic table and download it's high resolution image now ( It's FREE)

References:
Chemical data: Wikipedia, Chemspider

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Bohrium (Bh) - Periodic Table (Element Information & More)

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This is a SUPER easy guide on Bohrium element. In fact, the table mentioned below is the perfect information box (Which gives you every single detail about the Bohrium element in Periodic table.) So if you want to know anything about Bohrium element, then this guide is for you.

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How James Chadwick Discovered the Neutron

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Russian chemist Dmitri Mendeleev created the periodic table on February 17, 1869, by writing down the symbols for the chemical elements and ordering them by their atomic weights. He recorded the sequence in a way that led to their being organized on the page in accordance with recognized patterns, or "periodicities," of behavior. It was arguably the biggest chemical discovery ever made.The way chemists regarded their field was completely altered by Mendeleev's theories, which relied on the earlier work of French scientist Antoine Lavoisier in the previous century. It was now feasible to anticipate each chemical element's behavior, including how it would interact with other elements, what kinds of compounds it would produce, and what kinds of physical attributes it would possess, because each chemical element had a set number and location in the table.

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The genius of Mendeleev's periodic table - Lou Serico

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https://en.wikipedia.org/wiki/Robert_Andrews_Millikan

https://www.nobelprize.org/prizes/physics/1935/chadwick/biographical/

https://en.wikipedia.org/wiki/Moseley%27s_law

https://en.wikipedia.org/wiki/Niels_Bohr

https://en.wikipedia.org/wiki/Discovery_of_the_neutron

https://en.wikipedia.org/wiki/Oil_drop_experiment

https://en.wikipedia.org/wiki/Atomic_nucleus

https://en.wikipedia.org/wiki/Ernest_Rutherford

https://en.wikipedia.org/wiki/Johann_Wolfgang_D%C3%B6bereiner

https://en.wikipedia.org/wiki/Henry_Moseley