An element which is an essential constituent of all organic compounds belongs to the following group of the modern periodic table :
(a) group 4 (b) group 14 (c) group 15 (d) group 16
(b) Group 14.
Carbon is the essential constituent of all organic compounds and belongs to Group 14 of the modern periodic table.
Electronic configuration of carbon (6): K = 2 L = 4
Group number = valence shell + 10
= 4 + 10 = 14.