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All group 1 elements are metals and have 1 valence electron

All group 1 metals are reactive metals and have a low melting point.

The elements in group 1 are

Lithium, sodium, potassium, rubidium, caesium and francium

The metals are soft and can be cut.

The melting point decreases

Density increases

Reactivity increases

As you go down the group.

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Group 1 metals form positively charged ions having a charge of +1 when they lose 1 valence electrons. These metals are all a part of Periods 2,3,4,5,6,7.

These metals are Lithium, Sodium, Potassium, Rubidium, Cassium and Firancium.

The boiling and melting point of the metals decrease down the group. For example, Lithium has the highest boiling point of 1342 degrees celcius, and Caesium has the lowest boiling point of 671 degrees celcius.

On the other hand, the chemical reactivity and also density increases down the group.

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Group 1 elements, known as alkali metals, include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr). These metals are very reactive, especially with water, and produce hydrogen gas when they react. They are soft and can be easily cut, with their reactivity increasing as you move down the group.

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All elements have one valence electron in their outermost shell

All elements in grp 1 are reactive metals

All these elements have low boiling and melting points

The elements in grp 1 are: Lithium, Sodium, Potassium, Rubidium, Cassium, Francium

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have 1 valence electron

all are metals

low melting and boiling points

are alkali metals

consist of lithium, sodium, potassium, rubidium, cesium and francium

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-alkali metals.

-all have one electron in their outer shell

- being very reactive, and having low densities and softness

-the rise in atomic mass balances for the larger atomic size

-low density.

- low melting and boiling point.

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GRP 1 elements : Akali metals like sodium and they all soft metals and have a positive charge of one electron

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GROUP 1 METALS ARE ALKALI METALS.THEY ARE VERY REACTIVE AND STORED IN OIL TO PREVENT REACTING WITH AIR AND WATER, THEY LOSE 1 ELECTRON TO FORM STABLE NOBLE GAS CONFIGURATION.(FORMS POSITIVE IONS WITH A CHARGE OF +1) ALL HAVE SAME NUMBER OF ELECTRONS IN THEIR VALENCE SHELLS.(EACH HAVE 1 ELECTRON).THEY HAVE LOW MP AND BP. THE DENSITY INCREASES AS IT GOES DOWN THE GROUP. IT CONSISTS OF LITHIUM, SODIUM, POTASSIUM,RUBIDIUM , CAESIUM AND FRANCIUM

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Group 1 elements are/have

- all alkali metals

- form positive ions to a charge of +1 (lose one electron to

form SNGC)

- all have the same number of electrons in their valance shell (1 electron)

- low melting point (decreases as you go down the group) & low density (increases as you go down the group)

eg. lithium,sodium,potassium and rubidium

- soft and can be cut easily

- They are very reactive, they are stored in oil to prevent them from reacting with air and water

- react with water to form soluble bases (alkalis)

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Elements of group 1 -> alkali metals / metals

List of the elements: lithium,sodium,potassium,rubidium,Caesium and francium

has 1 valence electron in the outermost shell

they react with water to form alkali

low melting points

stored in mineral oil solution as they are very reactive

alkalis metals are soft due to the presence of single electron in their valence shell

boiling point: between 98 and 99 degrees Celsius.

Trends:

chemicals reactivity increases down the group

density (in general) increase down the group

decrease in melting and boiling point

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All the alkali metals are highly reactive,are good conductors,have a shiny appearance and the ionic compounds... alkali metals readily form ionic compounds by losing their single valence electrons resulting in positively charged ions called (cations) with a 1+ charge. For example sodium forms Na+ ions

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