Question

Which valence shell electrons arrangement is that of a metallic element?

• A. 2, 1
• B. 2, 4
• C. 2, 5
• D. 2, 7

Answer 1

Answer: (A)

2, 1

Answer : $2,1$

(1) $2,1$ valence shell electrons arrangement for Lithium metal. (electronic configuration is $1s^{2}2s^1$

(2) Other valence shell $e^{\ominus }$ are $p-$block elements of which is generally non-metals of metalloids.