
- A

- ✓

- C

- D








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$(1)$ $Y$ is diamagnetic in nature while $Z$ is paramagnetic
$(2)$ Both $Y$ and $Z$ are coloured and have tetrahedral shape
$(3)$ In both $Y$ and $Z , \pi$-bonding occurs between $p$-orbitals of oxygen and $d$-orbitals of manganese.
$(4)$ In aqueous acidic solution, $Y$ undergoes disproportionation reaction to give $Z$ and $MnO _2$.
The above reaction is called
$(1)$ $NaN{H_2};\mathop {C{H_3}}\limits^{{\text{a}}\,\,\,\,\,\,\,} C{H_2}Br$:${H_2},{\text{ }}\mathop {{\text{(one mole)}}}\limits^{\text{b}} {\text{ }}Pd{\text{ or }}Ni$
$(2)$ $NaN{H_2};C{H_3}C{H_2}C{H_2}Br$:${H_2}{\text{ (two moles) }}Pd{\text{ or }}Ni$
$(3)$ $NaN{H_2};C{H_3}C{H_2}C{H_2}Br$:${H_2},{\text{ (one mole) }}Pd{\text{ or }}Ni$
$(4)$ $NaN{H_2};C{H_3}C{H_2}C{H_2}Br$:$B{H_3},{H_2}{O_2},O{H^ - }$
Complexes : $\left[\mathrm{CoF}_{6}\right]^{3-},\left[\mathrm{Co}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+},\left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$ and $\left[\mathrm{Co}(\mathrm{en})_{3}\right]^{3+}$
$\quad\quad\quad\quad\quad\quad A\quad\quad\quad\quad \quad B\quad\quad\quad\quad\quad\quad C\quad\quad\quad\quad\quad\quad D$
Choose the correct option: