The electronic configuration of three elements X, Y and Z are X-2,8; Y-2,8,7 and Z-2,8,2‘Which of
the given is correct.
a) X is a metal
b) Y is a metal
c) Zis a non-metal
d) Y is a non-metal and Z is a metal
the given is correct.
a) X is a metal
b) Y is a metal
c) Zis a non-metal
d) Y is a non-metal and Z is a metal