Numford
Bond order

Bond order of H₂

Bond order 1, diamagnetic. 2 electrons: Nb = 2, Na = 0.

HH
  • H

H₂Hydrogen

Bond order 1

2 electrons, all paired

  • Bond order1
  • Magnetismdiamagnetic
  • Electrons2

Molecular orbitals

2 electrons
1bond order
diamagnetic

(Nb − Na) / 2 = (2 − 0) / 2

1s1sσ1sσ*1sH atomMoleculeH atomEnergy

σ1s²

Working

Bond order step by step

  1. H₂ has 2 electrons: 1 from each H.
  2. Configuration: σ1s²
  3. Bonding electrons Nb = 2, antibonding electrons Na = 0.
  4. Bond order = (Nb − Na) / 2 = (2 − 0) / 2 = 1.
  5. Every electron is paired, so H₂ is diamagnetic.

Class 11, Chapter 4 Chemical Bonding and Molecular Structure.

Questions

Bond order of H2: quick answers

What is the bond order of H2?

1. Bond order = (Nb − Na) / 2 = (2 − 0) / 2 = 1. Bonding electrons Nb = 2, antibonding electrons Na = 0.

Is H2 paramagnetic or diamagnetic?

Diamagnetic. Every electron is paired, so H₂ is diamagnetic.

What is the molecular orbital configuration of H2?

σ1s², with 2 electrons in all.

Try any molecule