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There are p-block elements in the perio...

There are ______ `p`-block elements in the periodic table.

A

`30`

B

`31`

C

`33`

D

`32`

Text Solution

Verified by Experts

The correct Answer is:
A
There are six groups of `p`-block elements: `13` to `18`. Except group `18`, each group consists of five elements. In group `18`, there are six elements but He is not labeled as a `p`-block element by definition because its last electron enters the `s`-subshell of the last shell. Thus, there is a total of `30` elements.
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