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Lesley Agyemang

Electronegativity and Intermolecular forces

Electronegativity is a measure of the attraction of a bonded atom for the pair
of electrons in covalent bonds. Molecules that have unequal sharing of
electrons are called polar molecules and dipole molecules are ones which
have the charge separated, therefore all polar molecules…

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Lesley Agyemang

Electronegativity is measured using the Pauling scale which was invented by
a US chemist called Linus Pauling in 1932. The Pauling scale was used to
measure the Electronegativity of an atom. Going across a period, the nuclear
charge increases and the size of the atom decreases these results…

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Lesley Agyemang

Intermolecular force is an attractive force between neighbouring molecules.
There are three types of intermolecular forces: Van der Waal's forces, Permanent
dipole-dipole forces, Hydrogen bonding
Vans der Waal's force is forces that attract forces between induced dipoles in
neighbouring molecules. In Van der Waal's forces atoms has temporary…

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Lesley Agyemang

Water has three special properties due to hydrogen bonding which are: ice is
less dense than water; water has relatively high melting + boiling points and
surface tension.

Ice is less dense than water:
Ice has open lattice with hydrogen bonds holding water molecules apart, when
ice melts,…


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