An element of atomic mass 40 has 2,8,8,2...

An element of atomic mass `40` has `2,8,8,2`, as the electronic configuration. One of the following statement regarding this elements is not correct?

A

It belongs to II group of the periodic table

B

It has 20 neutrons

C

The formula of its oxide is `MO_2`

D

It belongs to 4th period of the periodic table

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The correct Answer is:

C

Its valency is 2. So it will form MO type compound.

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