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Chemical Bonding and Molecular Structure · Question 45

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

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

  1. NO2+
  2. NO3-
  3. NO2
  4. NO2-

Answer

(1) NO2+

Solution

Apply VSEPR theory to the N atom in each species.

NO2+ ( O= N=O): 2 bond pairs, no lone pair ⇒ sp, linear ⇒ bond angle 180 .

NO3-: 3 bond pairs, no lone pair ⇒ sp², trigonal planar ⇒ 120 .

NO2: sp² with one odd electron on N ⇒ about 134 .

NO2-: sp² with one lone pair on N ⇒ about 115 .

∴ The maximum bond angle at N is in NO2+.

Answer: (1)

AIPMT 2015 (Cancelled)

Keep practising — Chemical Bonding and Molecular Structure

2

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)
3

Which of the following molecules has the maximum dipole moment?

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

Which one of the following species has plane triangular shape?

  1. N3-
  2. NO3-
  3. NO2-
  4. CO2
AIPMT 2014
5

XeF2 is isostructural with

  1. SbCl3
  2. BaCl2
  3. TeF2
  4. ICl2-
NEET 2013
6

Which of the following is a polar molecule?

  1. SiF4
  2. XeF4
  3. BF3
  4. SF4
NEET 2013
7

Which of the following is paramagnetic?

  1. CN-
  2. NO+
  3. CO
  4. O2-
NEET 2013
8

Which one of the following molecules contains no bond?

  1. SO2
  2. NO2
  3. CO2
  4. H2O
NEET 2013
9

The pair of species that has the same bond order in the following is

  1. CO, NO+
  2. NO-, CN-
  3. O2, N2
  4. O2, B2
NEET 2013 (Karnataka)
10

In which of the following pair both the species have sp3 hybridization ?

  1. SiF4, BeH2
  2. NF3, H2O
  3. NF3, BF3
  4. H2S, BF3
NEET 2013 (Karnataka)
11

In which of the following ionization processes the bond energy increases and the magnetic behaviour changes from paramagnetic to diamagnetic.

  1. O2 O2+
  2. C2 C2+
  3. NO NO+
  4. N2 N2+
NEET 2013 (Karnataka)

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