MCQ
All $Zn( +II)$ compounds are white because
- ✓$Zn^{2+}$ has a $d^{10}$ configuration and the $d-$ subshell is full
- B$Zn^{2+}$ shows $d-d$ transition
- C$Zn^{2+}$ has no electron in the $4s-$ subshell
- D$Zn$ is not a transition element
✓
Answer
Correct option: A.
$Zn^{2+}$ has a $d^{10}$ configuration and the $d-$ subshell is full
a
The electronic configuration of $Zn ^{2+}$ is $3 d ^{10} 4 s ^0$. All the electrons are paired. Hence, all $Zn ^{2+}$ compounds are colorless or white.
The electronic configuration of $Zn ^{2+}$ is $3 d ^{10} 4 s ^0$. All the electrons are paired. Hence, all $Zn ^{2+}$ compounds are colorless or white.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Consider the following reaction The product '$X$' is used
→Which of the following pair of complexes have the same $EAN$ of the central metal atoms/ions ?
→If the difference in electronegativities of two elements is very large, then
The tripeptide harmone present in most living cells is...
Which one of the following molecules has a coordinate bond
The $IUPAC$ name of $\begin{matrix}
C{{H}_{3}}-CH-C-C-NH \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,| \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}\,\,\,\,O\,\,\,\,\,\,\,O\,\,\,\,\,\,Br \\
\end{matrix}$ is
→C{{H}_{3}}-CH-C-C-NH \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,\,||\,\,\,\,\,\,\,\,| \\
\,\,\,\,\,\,\,\,\,\,\,\,\,\,C{{H}_{3}}\,\,\,\,O\,\,\,\,\,\,\,O\,\,\,\,\,\,Br \\
\end{matrix}$ is
Match $List-I$ with $List-II$
→| $List-I$ | $List-II$ |
| $A.$ Benzenesulphonyl chloride | $I.$ Test for primary amines |
| $B.$ Hoffmann bromamide reaction | $II.$ Anti Saytzeff |
| $C.$ Carbylamine reaction | $III.$ Hinsberg reagent |
| $D.$ Hoffmann orientation | $IV.$ Known reaction of Isocyanates. |
Choose the correct answer from the options given below.
A simple example of a coordinate covalent bond is exhibited by
Which one of the following is an outer orbital complex and exhibits paramagnetic behaviour?
Aqueous solution of sodium salt of $2-$ methyl butanedioic acid on kolbe's electrolysis gives
→