MCQ
Elements having atomic number $33, 47, 53, 59, 68, 74, 82$ are present in
- A$s, p, d$ block
- ✓$p, d, f$ block
- C$s, p, d, f$ block
- D$s, d, f$ block
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$STATEMENT-2$: The $\mathrm{Fe}$ in $\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_5 \mathrm{NO}_3 \mathrm{SO}_4\right.$ has three unpaired electrons.
($A$) tetranuclear $\left[\mathrm{B}_4 \mathrm{O}_5(\mathrm{OH})_4\right]^{2-}$ unit
($B$) all boron atoms in the same plane
($C$) equal number of $s p^2$ and $s p^3$ hybridized boron atoms
($D$) one terminal hydroxide per boron atom
Statement $I :$ The identification of $Ni ^{2+}$ is carried out by dimethyl glyoxime in the presence of $NH _{4} OH$.
Statement $II :$ The dimethyl glyoxime is a bidentate neutral ligand.
In the light of the above statements, choose the correct answer from the options given below:
Reason : Covalency of oxygen is two.