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Tell me_Wzai

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1. van der Waals Force
2. Metallic Bond
3. Ionic Bond
4. Covalent Bond

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1. Dative bond

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Types of Bond(Ruvanesh.P)
1. Ionic Bond
2. Covalent Bond
3. Dative Bond
4. van der Waals forces
5. Metallic Bond

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1. Solid phase is denser than the liquid phase.
Why ice floats in water?
Smaller volume will result a higher density thus water has a higher density than ice.

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Because ice is less dense than water

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sp
sp2
sp3
sp3d
sp3d2

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Metallic bond can be defined as the electrostatic force between the positively charged metal ions and the ‘sea’ of delocalised electrons.

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Lewis structure show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule.

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-ionic bond
-covalent bond
-hydrogen bonds
-van der waals interaction

Amir :)

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Lewis structure extend the concept of the electron dot diagram by adding lines between atoms to represent shared pairs in a chemical bond

Amir :)

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Ice floats on water

Why?
It is because in ice, each water molecule is tetrahedrally surrounded by four other water molecules with hydrogen bonds

Amir :)

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Metallic bonding is type of chemical bonding that rises from electrostatic attractive force between conduction electrons and positively charged metal ions

Amir :)

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Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.

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Lewis structure also known as Lewis dot diagram,Lewis dot formulas,Lewis dot structures, electron dot structures or Lewis electron dot structures

Adhwa

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lewis structure help visualize the valence electrons of atom and moecule, whether they exist as lone pair or bond pair
_akmal

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Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.

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The five shapes of hybridization,linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.

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-ionic bond
-covalent bond
-dative bond

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There is five basic shape of hybridisation which is linear ,trigonal planar, tetrahedral, trigonal bipyramidal,  and octahedral

Amir :)

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-ionic bond
-Covalent Bond
-Dative Bond
#dayang

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-dative bond
-ionic bond
-metallic bond

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-ionic bonding
-covalent bonding
-metallic bonding
_akmal

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ionic bond
Dative bond
Covalent bond
Metallic bond

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Water is made upof positively charged hydrogen atoms and negatively charged oxygen atoms. When water cools, the hydrogen bonds adjust to hold the negatively charged oxygen atoms apart which prevents the ice from becoming any denser.For water the density actually decreases along with a decrease in temperature  causing ice to be less dense than water

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Lewis structure is also called electron-dot structures or electron-dot diagrams, are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule. A lewis structure can be drawn for any covalently-bonded molecules, as well as coordination compounds.

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Hydrogen bonding makes ice less dense than liquid water.The lattice structures of ice makes it less dense than freely flowing molecules of liquid water,enabling it to float on water

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Dative bond,ionic bond, covalent bond, hydrogen bonds, and van der Waals interactions

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Metallic bond can be defined as the electrostatic force between the positively charged metal ions and the sea of delocalized electron

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Lewis Structure is a very simplified representation of the valence shell electrons in a molecule. It is used to show how the electrons are arranged around individual atoms in a molecule. Electrons are shown as "dots" or for bonding electrons as a line between the two atoms.

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-ionic bond
-covalent bond
-dative bond
-hydrogen bonds
-Van der Waals interactions

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Lewis structure are diagrams that show the bonding between atoms of a molecule, and the lone pairs of electrons that may exist in the molecule. A Lewis structure can be drawn for any covalently-bonded molecule.

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5 types of hibridization(shape)
1 linear
2 trigonal planar
3 tetrahedral
4 trigonal bypiramidal
5 octahedral

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Basic shape of hybridisation
-Linear
-Trigonal planar
-Tetrahedral
-Trigonal bipyramid
-Octahedral
#dayang

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Lewis structures are a convenient way of showing the number of valence electrons and how these electrons are involved in the process of bond formation.

Kai Sheng

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-ionic bonding
-covalent bonding
-dative covalent bonding
-hydrogen bonding
-metallic bonding
-IMF

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When atoms react to form chemical bonds, only the electrons in the outermost or valence shell are involved. Thus, only the electronic configuration of valence shell is important in bond formation.

In order to place emphasis on the elcetrons on the outermost shell, we use special symbol known as Lewis Structure or  Lewis Diagram (also called electron-dot structure).

-Xinyi Ong-

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Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.

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covalent bond
ionic bond
metallic bonds
dipole–dipole interactions
London dispersion force
hydrogen bonding

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ionic bonding?
Ionic bonding, also called electrovalent bond is a type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

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5 basic shapes of hybridization
-linear (sp)
-trigonal planar (sp2)
-tetrahedral (sp3)
-trigonal bipyramidal (sp3d)
-octahedral (sp3d2)

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1. Ionic (electrovalent) bonds
-is the electrostatic attraction between two oppositely charged ions.
2. Covalent bonds
-the atoms share electrons so that each atom achieves noble gas configuration.
3.Coordinate bond / Dative bond
- formed when both electrons in the covalent bond are supplied by one of the bonded atoms.
4. Hydrogen bond
-is a strong permanent dipole-dipole attraction between molecules which contain a hydrogen atom covalently bonded to a small and highly electronegative atom, such as fluorine, oxygen or nitrogen.
5.Van der Waals forces
--> dipole-dipole forces: attractive forces exist between neutral polar molecule
--> London forces: force of attraction between temporary dipole and induced dipole
6.Metallic bond
-electrostatic attraction between the positively charged metal ions and the sea of delocalised electrons.

-Xinyi Ong-

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Density of a substance is its mass per unit volume.
Generally, a substance in solid phase is denser than the liquid phase.
However, due to the presence of hydrogen bond, the water molecules cooled in solid are arranged into tetrahedral arrangement (an open structure) which has greater volume than liquid water, and thus has a lower density than liquid water. Therefore, the ice float on the water.

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covalent bonding?
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms.

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Metallic bonding is a type of chemical bonding that rises from the electrostatic attractive force between conduction electrons (in the form of an electron cloud of delocalized electrons) and positively charged metal ions. It may be described as the sharing of free electrons among a structure of positively charged ions (cations).

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There are 5 common types of hybrid orbitals:
1) sp hybrid orbital (linear arrangement)
2) sp² hybrid orbital (trigonal planar arrangement)
3) sp³ hybrid orbital (tetrahedral arrangement)
4) sp³d hybrid orbital (trigonal bipyramidal arrangement)
5) sp³d² hybrid orbital (octahedral arrangement)

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Effect of Hydrogen Bonding on the density of water and ice

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Effect of Hydrogen Bonding on the density of water and ice

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Water is one of the few substances that is less dence as a solid than it is as a liquid. In ice, each water molecule is surrounded tetrahedrally by four other water molecules linked through hydrogen bonding. The water molecules arrange themselves in such a way as to maximise the amount of hydrogen bonding between them. This leaves a relatively large amount of space between them and gives rise to an "open" structure. This "open" structure of ice accounts for the fact that ice is less dense than water.

-Xinyi Ong-

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dative covalent bond?
dative covalent bond is a covalent bond (a shared pair of electrons) in which both electrons come from the same atom.

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In metals, the valence electron are no longer associated with a particular metal atom but but are free to move throughout the solid piece of metal.
The electrons are said to be delocalised. With valence electron delocalised, the metal atoms are effectively ionised.
The metallic bond is defined as the electrostatic attraction between the positively charged metal ions and the sea of delocalised electrons.

-Xinyi Ong-

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hydrogen bond?
hydrogeng bond is the interaction involving a hydrogen atom located between a pair of other atoms having a high affinity for electrons; such a bond is weaker than an ionic bond or covalent bond but stronger than van der Waals forces.

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irdina

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Hybridisation is a process of mixing atomic orbitals in an atom to form a new set of hybrid orbitals

SHAROL

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The existence of metallic bond in metals accounts for physical properties of metals
1. malleability
2.ductility
3.electrical conductivity
4.thermal conductivity

_SHAROL

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A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compound. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bond.

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There are four types of bonds or interactions which is ionic bonds, covalent bonds, hydrogen bonds, and van der Waals interactions.

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Ice floats on water because it is less dense than water. Density is defined as mass per unit volume of a substance. The hydrogen bonds that form when water freezes into ice allow the molecules to be spaced farther apart, thus making them take more space, decreasing the overall density and making it float in the water.

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Metallic bonding is the strong electrostatic force of attraction between the metal ions and the delocalised electrons.

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The five basic shapes of hybridisation are linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.

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- hydrogen bond
- ionic bond
-covalent bond
-dative bond

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1. sp³ (tetrahedral arrangement)
2. sp² (trigonal planar arrangement)
3. sp (linear arrangement)
4. sp³d (trigonal bipyramidal arrangemnet)
5. sp³d² (octahedral arrangement)

-Xinyi Ong-

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Steps to draw lewis structure
-khairina-