MCQ
The tendency towards complex formation is maximum in:
- AS-block elements.
- BP-block elements.
- CD-block elements.
- DNone of the above.
Explanation:
The tendency towards complex formation is maximum in d−block elements as they have maximum vacant orbitals and thus shows variable oxidation state.
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$(A)$ Hydrolysis of Marshall's acid gives $H_2SO_4$ and $H_2O_2$ as final product
$(B)$ In $SCNSiH_3$ structure around $N$ is bent
$(C)$ Basic unit for silicates is $SiO_4^{-4}$
$(D)$$N{H_4}Cl + NaOH \to N{H_3} \uparrow $
(Molecular mass of $CHCl_3 = 119.5 \,u$ and molecular mass of $CH_2Cl_2 = 85\, u$)

