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Need for Periodicity

Element X has...

Question

Element X has twelve protons in its nucleus. To which group in the periodic table would it belong?

A

IVA (14)

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B

IIA (2)

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C

IIIA (13)

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D

VIA (16)

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Solution

The correct option is B IIA (2)
The element has $12$ protons. Thus its atomic number is $12$ . The element of atomic number $12$ is Mg
Magnesium belongs to second group; i.e, group $I I A$

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