MCQ
$P$ and $R$ respectively are


- A

- B

- C

- ✓







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($1$) The value of $x$ is. . . . .
($2$) The value of $y$ is. . . . .
(en-ethylenediamine; $H _{2} N - CH _{2}- CH _{2}- NH _{2}$ )
where $gly =$ glycine, $en =$ ethylenediamine and $bpy =$ bipyridyl moities. (At. nos. $Ti = 22, V = 23,$$ Fe = 26, Co = 27$)