Chemistry
Covalent bonds can be single, double or triple covalent bond.
(a) How many electrons are shared in each?
(b) Give an example of each type.
Atomic Structure
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Answer
A single covalent bond is formed by sharing of one pair of electrons between the atoms, each atom contributing one electron.
Ex: Molecule of hydrogen [H-H]
A double covalent bond is formed by sharing of two pairs of electrons between two atoms.
Ex: Molecule of oxygen [O=O]
A triple covalent bond is formed by sharing of three pairs of electrons between two atoms.
Ex: Molecule of nitrogen [N≡N]
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