Question

an atom of an elementhad 7 electrons in the outer M she'll write its a)electronic configuration. b)atomic number c) valency D) name the elements

Answer 1

a) 2,8,7
b)2+8+7 = 17
c) 8-7 = 1
d) Chlorine (Cl)

Answer 2

a) E.Configuration-2,7
b) ATM. no. -9
c) valency- -1
d) nitrogen,