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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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Knowledge Check

  • The density of calcium is less than that of magnesium because.

    A
    Nuclear charge of calcium is more than magnesium
    B
    Vacant 3d-orbital is present in calcium
    C
    Size of calcium is less than magensium
    D
    None of the above

  • The ionization potential of nitrogen is more than that of oxygen because of

    A
    the greater attraction of the electrons by the nucleus
    B
    the extra stability of the half filled p-orbitals
    C
    the smaller size of nitrogen
    D
    more penetration effect

  • The ionization potential of nitrogen is more than that of oxygen because of

    A
    the greater attraction of the electrons by the nucleus
    B
    the extra stability of the half filled p-orbitals
    C
    the smaller size of nitrogen
    D
    more penetration effect Electron affinity