Download App

2. structure of atom — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
Pick out the isoelectronic structures from the following

$\mathop {CH_3^ + }\limits_{\rm{I}} $ $\mathop {{H_3}{O^ + }}\limits_{{\rm{II}}} $ $\mathop {N{H_3}}\limits_{{\rm{III}}} $ $\mathop {CH_3^ - }\limits_{{\rm{IV}}} $

  • A
    $I$  and $II$
  • B
    $I $ and $ IV$
  • C
    $I$ and $III$
  • ✓
    $II, III $ and $ IV$
✓

Answer

Correct option: D.
$II, III $ and $ IV$
d
(d) $CH_3^ + = 6 + 3 - 1 = 8{e^ - },$

${H_3}{O^ + } = 3 + 8 - 1 = 10{e^ - },$

$N{H_3} = 7 + 3 = 10{e^ - },$ $CH_3^ - = 6 + 3 + 1 = 10{e^ - }$

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 2. structure of atom→2. structure of atom — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

On decreasing the $p \mathrm{H}$ from $7$ to $2$ , the solubility of a sparingly soluble salt ($MX$) of a weak acid ($HX$) increased from $10^{-4} \mathrm{~mol} \mathrm{~L}^{-1}$ to $10^{-3} \mathrm{~mol} \mathrm{~L}^{-1}$. The $p \mathrm{~K}_{\mathrm{s}}$ of $\mathrm{HX}$ is:
→
What is the value of azimuthal quantum number for $‘g’$ sub shell ?
→
If molecular mass and atomic mass of sulphur are $256$  and $32$  respectively, its atomicity is
→
The most unlikely representation of resonance structures of $p-$ nitrophenoxide ion is
→
If $\text{HCl}$ is added to pure water at $25^\circ C$ the ionic product of water will be :
→
The $H-C-H$ bond angle in $CH_4$ is $109.5^o$, due to lone pair repulsion, the  $H - O - H$ angle in $H_2O$ will
→
In which of the following does sulphur has the lowest oxidation state?
→
The $IUPAC$ name of (image) is
→
The total number of isomeric trimethyl benzene is
→
Atomic number of element $ ........ $ is $19.$
→