MCQ
Which compound does not possess linear geometry
- ✓$C{H_2} = C{H_2}$
- B$HC \equiv CH$
- C$BeC{l_2}$
- D$C{O_2}$
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$(A)$ The number of $Cl = O$ bonds in $(ii)$ and $(iii)$ together is two
$(B)$ The number of lone pairs of electrons on $Cl$ in $(ii)$ and $(iii)$ together is three
$(C)$ The hybridization of $Cl$ in $(iv)$ is $sp ^3$
$(D)$ Amongst $(i)$ to $(iv)$, the strongest acid is $(i)$

How can this reaction is made to proceed in forward direction?
According the Werner's theory.
$(1)$ Ligands are connected to the metal ions by covalent bonds.
$(2)$ Secondary valencies have directional properties
$(3)$ Secondary valencies are non-ionisable
Of these statements :