MCQ
The general formulas ${C_n}{H_{2n}}{O_2}$ could be for open chain
- ADiketones
- ✓Carboxylic acids
- CDiols
- DDialdehydes
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$(1)$ Ligands are connected to the central metal ions by covalent bonds.
$(2)$ Secondary valencies have directional properties
$(3)$ Secondary valencies are non-ionisable Of these statements
$ 3 \mathrm{ROH}+\mathrm{PCl}_3 \rightarrow 3 \mathrm{RCl}+\mathrm{A} $
$ \mathrm{ROH}+\mathrm{PCl}_5 \rightarrow \mathrm{RCl}+\mathrm{HCl}+\mathrm{B}$
(Atomic nos. $Mn = 25,\,Fe = 26,\,Co = 27$)