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The density of Mg is more than that of "...

The density of Mg is more than that of "Ca" because

A

Nuclearcharge of 'Ca' is more than Mg

B

vacant 3d orbital is present in Ca

C

Vacant 3d orbital is present in Mg

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
B
Presence of vacant "3d" orbitals in "Ca" leads to much increase in atomic volume.
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    A
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