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Chemical Bonding and Molecular Structure

JEE Main 2024 (Online) 30th January Evening ShiftMCQEasy📈 Topic in 20% papers+4−1
Ques. 1JEE Main 2024, 30 January (Evening Shift)

Given below are two statements: In the light of the above statements, choose the most appropriate from the options given below:

  1. Statement I is true but Statement II is false.
  2. Both Statement I and Statement II are true.
  3. Both Statement I and Statement II are false.
  4. Statement I is false but Statement II is true.

Answer

(3) Both Statement I and Statement II are false.

Solution

[figure]

Statement I: μ(NH3) = 1.47 D > μ(NF3) = 0.23 D ⇒ Statement I is false

Statement II: in NH3 the N–H moments (towards N) and the lone-pair moment act in the SAME direction; in NF3 the N–F moments (towards F) OPPOSE it ⇒ Statement II is false

Answer: (3)

Keep practising — Chemical Bonding and Molecular Structure

Ques. 2JEE Main 2024, 30 January (Evening Shift)

The molecule / ion with square pyramidal shape is

  1. PCl5
  2. [Ni(CN)4]2-
  3. PF5
  4. BrF5
Ques. 3JEE Main 2024, 29 January (Morning Shift)

The number of species from the following which are paramagnetic and with bond order equal to one is . H2, He2+, O2+, N22-, O22-, F2, Ne2+, B2

Ques. 4JEE Main 2024, 29 January (Morning Shift)

Number of compounds with one lone pair of electrons on central atom amongst following is . O3, H2O, SF4, ClF3, NH3, BrF5, XeF4

Ques. 5JEE Main 2024, 29 January (Evening Shift)

The total number of molecules with zero dipole moment among CH4, BF3, H2O, HF, NH3, CO2 and SO2 is .

Ques. 6JEE Main 2024, 29 January (Evening Shift)

The total number of anti bonding molecular orbitals, formed from 2s and 2p atomic orbitals in a diatomic molecule is .

Ques. 7JEE Main 2024, 27 January (Morning Shift)

Choose the polar molecule from the following:

  1. CCl4
  2. CO2
  3. CH2=CH2
  4. CHCl3
Ques. 8JEE Main 2024, 27 January (Morning Shift)

Sum of bond order of CO and NO+ is .

Ques. 9JEE Main 2024, 27 January (Evening Shift)

The number of non-polar molecules from the following is . HF, H2O, SO2, H2, CO2, CH4, NH3, HCl, CHCl3, BF3

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