Question

(C)
9. The electronic configuration of three elements X, Y, and z are X- 2,8, y-2, 8, 7 and 2 - 2,8, 2
which of the following of correct?
1
(a) X is a metal
(b) Y is a metal (c) Z is a non-metal
(d)Y is a non-metal
and Z is Metal.​

Answer 1

Answer:

(d) is correct option

Explanation:

X is 2,8 so a noble metal

Y is 2,8,7 so a non-metal as it will take one electron to complete its octet

Z is 2,8,2 so, it acts as a metal