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.
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]
Related Questions
State the type of bonding in the following molecules.
(a) water,
(b) calcium oxide,
(c) hydrogen chloride
The atomic species X and Y have different number of protons but the same number of nucleons. While atoms A and B have the same number of protons but different number of nucleons.
(a) Which of them are
(i) isotopes
(ii) isobars ?
(b) Give one example of each.
Taking MgCl2, as an example of electrovalent bond, CCl4 as a covalent bond. Give a difference between electrovalent and covalent bonds.
Give orbital diagram of the following :
(a) magnesium chloride,
(b) nitrogen
(c) methane
(d) hydrogen chloride