Chemistry

Chemical Bonding and Molecular Structure

1,277 Questions

This section tests your knowledge of chemical bonding, molecular structure, and hybridization. It covers ionic and covalent bonds, octet rule exceptions, and molecular geometry. These chemistry questions are common in various competitive entrance examinations.

Ionic and covalent bondsHybridisation of elementsOctet rule exceptionsMolecular geometryIntermolecular forces

Chemical Bonding and Molecular Structure Questions

Multiple choice

In case of which of the following molecular geometries, the bond angles are 1200?

  1. Linear

  2. Trigonal planar

  3. Tetrahedral molecular

  4. Trigonal bipyramid
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The trigonal planar is a molecular geometry model with one atom at the centre and three atoms at the corners of a triangle, called peripheral atoms, all in one plane. In an ideal trigonal planar species, all three ligands are identical and all bond angles are 120°, e.g. boron trifluoride (BF3), formaldehyde (H2CO), phosgene (COCl2), and sulfur trioxide (SO3).

Multiple choice

Which of the following compounds is polar?

  1. CH4

  2. C2H2

  3. C2H3

  4. CHCl3

  5. -
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is a polar molecule. The bond between carbon and hydrogen is considered non-polar, but the bonds between carbon and chlorine are considered polar covalent.

Multiple choice

What type of molecule is ammonia?

  1. Polar

  2. Non-polar

  3. Paramagnetic

  4. Lewis acid

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Depending upon the electronegativities of the sharing atoms, a shared electron pair may be attracted at varied degree between the two atoms. This results in a partial positive and negative charge upon them and results in a polar molecule. Ammonia is thus, polar in nature.