Download App

5. Co-ordination chemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry5. Co-ordination chemistry1 Mark
MCQ
What is true for ${[Fe{(CN)_6}]^{3 - }}$ and ${[Fe{F_6}]^{3 - }}$
  • ✓
    Both are paramagnetic
  • B
    Only ${[Fe{(CN)_6}]^{3 - }}$ is paramagnetic
  • C
    Only ${[Fe{F_6}]^{3 - }}$ is paramagnetic
  • D
    Both are diamagnetic
✓

Answer

Correct option: A.
Both are paramagnetic
a
(a) Due to the presence of one unpaired electron, both are slightly paramagnetic.

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

More "M.C.Q (1 Marks)" from 5. Co-ordination chemistry→5. Co-ordination chemistry — all question types→Chemistry STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Saponification (basic hydrolysis) of  $\begin{matrix}
   {{C}_{6}}{{H}_{5}}\,C{\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{O}}C{{H}_{3}}  \\
   ||\,\,  \\
   O\,\,  \\
\end{matrix}$ will yield 

[${\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle-}$}}{O}} =$ mass $- 18$ isotope of oxygen]

→
$(T)$ imparts violet colour $\xrightarrow{{compd\,.\,\,(U) + conc.\,{H_2}S{O_4}}}$ $(V)$ Red gas $\xrightarrow{{NaOH + AgN{O_3}}}$ $(W)$ Red ppt. $\xrightarrow{{N{H_3}\,\,so\ln .}}$ $(X)$

$(W)$ Red ppt. $\xrightarrow{{dil.\,\,HCl}}$ $(Y)$ white ppt.

$(U)$ $\mathop {\xrightarrow{{NaOH}}}\limits_\Delta  $ $(Z)$ gas (gives white fumes with $HCl$ ) ?

sublimes on heating

Identify $(T)$ to $(Z).$

→
Which of the following statements are correct?

$(A)$ The electronic configuration of $Cr$ is $[ Ar ] 3 d ^{5}$ $4 s^{1}$.

$(B)$ The magnetic quantum number may have a negative value.

$(C)$ In the ground state of an atom, the orbitals are filled in order of their increasing energies.

$(D)$ The total number of nodes are given by $n-2$.

Choose the most appropriate answer from the options given below ....

→
$\begin{matrix}
   O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   ||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   R-C-R\underset{(catalyst)}{\overset{HCN}{\longleftrightarrow}}  \\
\end{matrix}\begin{matrix}
   \,\,\,\,\,OH  \\
   |  \\
   R-C-R  \\
   |  \\
   \,\,\,\,CN  \\
\end{matrix}$

Which of following can be used as a catalyst in the above reaction?

→
Assertion: $CH_3COCl$ is converted to $CH_3CONH_2$ on reaction with $NH_3$.
Reason : $Cl$ is a stronger nucleophile and better leaving group
→
Denaturation of proteins leads to loss of its biological activity by
→
The correct statement among the following is
→
The freezing point of aqueous solution which contains $5\%$ by mass urea, $1.0\%$ by mass $KCl$ and $10\%$ by mass of glucose is  ........ $K$. $\left( {{K_{{H_2}O}} = 1.86\,K\,molalit{y^{ - 1}}} \right)$
→
Which would exhibit ionisation isomerism
→
The correct order of decreasing value of $K_{eq.}$ is
→