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Chemical Bonding and Molecular Structure · Question 40

AIPMT 2015MCQEasy📈 Topic in 75% papers+4−1
1

In which of the following pairs, both the species are not isostructural ?

  1. Diamond, Silicon carbide
  2. NH3, PH3
  3. XeF4, XeO4
  4. SiCl4, PCl4+

Answer

(3) XeF4, XeO4

Solution

(1) Diamond and silicon carbide both have a three-dimensional network of tetrahedrally bonded (sp3) atoms ⇒ isostructural.

(2) NH3 and PH3: 3 bond pairs + 1 lone pair ⇒ both trigonal pyramidal.

(3) XeF4: 4 bond pairs + 2 lone pairs (sp3d2) ⇒ square planar

XeO4: 4 σ bonds, no lone pair (sp3) ⇒ tetrahedral

⇒ Not isostructural.

(4) SiCl4 and PCl4+: 4 bond pairs, no lone pair ⇒ both tetrahedral.

Answer: (3)

AIPMT 2015

Keep practising — Chemical Bonding and Molecular Structure

2

Decreasing order of stability of O2, O2-, O2+ and O22- is

  1. O22- > O2- > O2 > O2+
  2. O2 > O2+ > O22- > O2-
  3. O2- > O22- > O2+ > O2
  4. O2+ > O2 > O2- > O22-
AIPMT 2015
3

Which of the following pairs of ions are isoelectronic and isostructural ?

  1. SO32-, NO3-
  2. ClO3-, SO32-
  3. CO32-, SO32-
  4. ClO3-, CO32-
AIPMT 2015 (Cancelled)
4

The correct bond order in the following species is

  1. O2+ < O2- < O22+
  2. O2- < O2+ < O22+
  3. O22+ < O2+ < O2-
  4. O22+ < O2- < O2+
AIPMT 2015 (Cancelled)
5

Which of the following options represents the correct bond order ?

  1. O2- > O2 < O2+
  2. O2- < O2 > O2+
  3. O2- > O2 > O2+
  4. O2- < O2 < O2+
AIPMT 2015 (Cancelled)
6

Maximum bond angle at nitrogen is present in which of the following ?

  1. NO2+
  2. NO3-
  3. NO2
  4. NO2-
AIPMT 2015 (Cancelled)
7

Which of the following species contains equal number of σ- and π-bonds ?

  1. (CN)2
  2. CH2(CN)2
  3. HCO3-
  4. XeO4
AIPMT 2015 (Cancelled)
8

Which of the following molecules has the maximum dipole moment?

  1. CO2
  2. CH4
  3. NH3
  4. NF3
AIPMT 2014
9

Which one of the following species has plane triangular shape?

  1. N3-
  2. NO3-
  3. NO2-
  4. CO2
AIPMT 2014
10

XeF2 is isostructural with

  1. SbCl3
  2. BaCl2
  3. TeF2
  4. ICl2-
NEET 2013
11

Which of the following is a polar molecule?

  1. SiF4
  2. XeF4
  3. BF3
  4. SF4
NEET 2013

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