Question

Compare the properties of a typical metal and a non-metal on the basis of the following.

Electronic configuration :

• A. Metal have 1, 2, 3, 4 valence electrons while non metals have 5, 6, 7, 8 valence electrons.
• B. Metal have 1, 2 valence electrons while non metals have 4, 5, 6, 7, 8 valence electrons.
• C. Metal have 1, 2, 3 valence electrons while non metals have 6, 7, 8 valence electrons.
• D. Metal have 1, 2, 3 valence electrons while non metals have 4, 5, 6, 7 valence electrons.

Answer 1

The correct option is D Metal have 1, 2, 3 valence electrons while non metals have 4, 5, 6, 7 valence electrons.

$\begin{array}{c}\text{Metals have}1,2,3\text{valence electrons because}\text{they can Loose either of these electrons to}\\ \text{gain octet configuration.}\text{Wheras Non metals can gain remaining electrons}\\ \text{to get octet configuration.}\end{array}$

Hence, option D is correct.