Question

In representative elements number of electrons in outermost shell varies from :

• A. 1 to 7
• B. 1 to 8
• C. 2 to 7
• D. 2 to 8

Answer 1

The correct option is A 1 to 7

The elements of $s$ and$p$ blocks except $d$ group elements are called as representative elements.

Their outer shells are not completely filled with electrons.

The elements get the nearest inert gas configuration by losing or gaining or sharing of electrons. They are chemically active. A few metals, all the non-metals and metalloids are a representative element.

The outermost electron shell of a representative element varies from $1ingroup1to7ingroupVII$. As $VIII$ group is a noble gas.

Hence option A is correct.