The melting point of $Zn$ is lower as compared to those of the other elements of $3d$ series because
the $d-$ orbitals are completely filled
the $d-$ orbitals are partially filled
$d-$ electrons do not participate in metallic bonding
$(A)$ and $(C)$ both
$E^o$ of $Cu$ is $+0.34\,V$ while that of $ Zn$ is $-\,0.76\,V$. Explain
What are inner transition elements? Decide which of the following atomic numbers are the atomic numbers of the inner transition elements: $29,59,74,95,102,104$ .
Most stable compound among the following is
Correct order of atomic Radii (Metallic radii)
Among $Co ^{3+}, Ti ^{2+}, V ^{2+}$ and $Cr ^{2+}$ ions, one if used as a reagent cannot liberate $H _{2}$ from dilute mineral acid solution, its spin-only magnetic moment in gaseous state is $......B.M$. (Nearest integer)