Question

The electronic configurations of three ele¬ments X, Y and Z are X — 2, 8; Y — 2, 8, 7 and Z — 2, 8, 2. Which’of the following is correct?
(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 a metal

Answer 1

Answer:

(d) is correct

Explanation:

X is Neon (nobel gas)

Y is Chlorine (non-metal)

Z is Magnesium (metal)