What is the valency of Sulphur?
Valency of sulphur is 2.
Explanation:
Valency: The combining capacity of an element is known as valency.
The combining capacity of the atoms to form molecules either with same or different elements is defined as valency.
Atom contains less than four electrons in its outermost shell; the valency of an atom is equal to the number of electrons present in the valence shell.
Examples:
Sodium has one electron in its outermost shell, so the valency of sodium is 1.
Calcium has two electrons in its outermost shell, so the valency of calcium is 2.
Aluminum has three electrons in its outermost shell, so the valency of aluminum is 3.
If the outer shell has more than four electrons, the valency = 8 - the number of electrons in the outer shell.
Sulphur has six electrons in its valence shell, so valency of sulphur = 8-6 = 2