An element E has following electronic configuration :
`{:(K,L,M,),(2,8,6,):}`
(a) To which group of the periodic table does element E belong ?
(b) To which period of the periodic table does element E belong ?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.

Explanation

The element with atomic no. (Z) = 16 is sulphur (S).
(a) It belongs to group 16 of the periodic table. (b) It belongs to third period since it has three shells.
(c) The element has six valence electrons. (d) The valency of the element is 2 (8 - 6 = 2).