Question

explain valency of potassium and calcium​

Answer 1

Answer:

Electronic configuration of potassium is: K(2)L(8)M(8)N(1). { At.no.-19 }

E.C. of Calcium is: K(2)L(8)M(8)N(2). { At.no.- 20}

Potassium & Calcium have 1 & 2 valence electrons in the outermost shell respectively. So their valencies are 1 and 2 respectively.