Which is diamagnetic ? - Vidyadip

MCQ

Which is diamagnetic ?

A
$[Co(F)_6]^{3-}$
✓
$[Ni(CN)_4]^{2-}$
C
$[NiCl_4]^{2-}$
D
$[Fe(CN)_6]^{3-}$

✓

Answer

Correct option: B.

$[Ni(CN)_4]^{2-}$

b
Diamagnetic substance have all paired electron.

(a) [Fe(CN)6]3- Oxidation state of Fe=+3

It has one unpaired electron and is paramagnetic.

(b) It has two unpaired electrons and is paramagnetic

(c) It has no unpaired electron and is diamagnetic

(d) $\therefore$ It is paramagnetic as it has five unpaired electrons.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

A complex of platinum, ammonia and chloride produces four ions per molecule in the solution. The structure consists with the observation is

The correct increasing order of trans-effect of the following species is

$cis-3$ -hexene $\xrightarrow{(a)}$ meso $3,4-$ hexanediol

$trans-3$ -hexene $\xrightarrow{(b)}$ meso $3,4-$ hexanediol

Choose pair of reagent $(a, b)$ for above conversions

The oxidation states of sulphur in $S_8, S_2F_2, H_2S$ respectively, are

$\begin{matrix}
C{{H}_{2}}-O-COR\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
CH-O-CO{{R}_{2}}\, \\
|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, \\
C{{H}_{2}}-O-CO{{R}_{3}} \\
\end{matrix}+3NaOH\to (A)+ $ Salt of fatty acid (soap)

Product $(A)$ of the reaction is

The reaction of toluene with $Cl_2$ in presence of $FeCl_3$ gives $X$ and reaction in presence of light gives $Y.$ Thus, $X$ and $Y$ are

The number of $Cl^-$ ion in $333\, g$ anhydrous $CaCl_2$ will be ................ $\mathrm{N_A}$

The number of Faraday required to generate $1$ $g$ $atom$ of $Mg$ from $MgCl_2$ is :-

A carbon-carbon triple bond in ethyne $( - C \equiv C - )$ consists of

Lysine is least soluble in water in the $pH$ range