Category: Chemistry

Bonding v Intermolecular forces 0

Bonding v Intermolecular forces

Forces between molecules are called van der Waals forces. These forces are up to one tenth the strength of intramolecular bonds. The strength of these forces determine a molecule’s physical properties, i.e. melting point...

Ionic bonding 0

Ionic bonding

Ionic substances consists of positive ions and negative ions arranged in a regular lattice Ionic bonding is the electrostatic attraction between oppositely charged atoms Attraction is non-directional Two atoms with a high difference in...

Ionisation energy 0

Ionisation energy

The energy required to remove an electron from an atom is called ionisation energy. More correctly, the ionisation energy is the energy needed to remove an electron from one mole of an element in...

Atomic theory 0

Atomic theory

Atoms are composed of protons, electrons and neutrons. Protons have a charge of +1 Electrons has -1 Neutrons are neutral In a neutral atom, the number of electrons is equal to the number of...

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