Question

Position of 3 elements A, B and C in the periodic table is shown below: group period- group 1 b, group 16 c, group 17 a ,Give reason explain the following: a) element is non metal. b) atom of element C has a larger size and atom of element A. c) element b has a valency of 1.​

Answer 1

Answer:

(a) 'A' is a metal because its valence electron is 1, it can readily loose electron to became stable. (b) Element 'C' belongs to 3rd period it has 3 shells whereas 'B' has only 2 shells, it belongs to 2nd period, distance between nucleus and valence electrons is more in C, hence its size is bigger than B.