Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JIPMER 2011
Exam
JIPMER
Year
2011
Subject
Chemistry
Chapter
Chemical Bonding and Molecular Structure

JIPMER 2011 · Chemistry · Chemical Bonding and Molecular Structure

The correct statement with regard to H_2^ + and H_2^ - is

The correct statement with regard to H2+\mathrm{H}_2^{+}and H2−\mathrm{H}_2^{-}is

Options

  1. Aboth H2+\mathrm{H}_2^{+}and H2−\mathrm{H}_2^{-}are equally stable
  2. Bboth H2+\mathrm{H}_2^{+}and H2−\mathrm{H}_2^{-}do not exist
  3. CH2−\mathrm{H}_2^{-}is more stable than H2+\mathrm{H}_2^{+}
  4. DH2+\mathrm{H}_2^{+}is more stable than H2−\mathrm{H}_2^{-}

Correct answer

D. H2+\mathrm{H}_2^{+}is more stable than H2−\mathrm{H}_2^{-}

Step-by-step solution

H2+:σ1s1,σ˙1s0\mathrm{H}_2^{+}: \sigma 1 s^1, \dot{\sigma} 1 s^0 Bond order =12=\frac{1}{2} H2−:σ1s2,σ1s1\mathrm{H}_2^{-}: \sigma 1 s^2, \sigma 1 s^1 Bond order =2−12=12=\frac{2-1}{2}=\frac{1}{2} The bond order of H2+\mathrm{H}_2^{+}and H2−\mathrm{H}_2^{-}are same but H2+\mathrm{H}_2^{+} is more stable than H2−\mathrm{H}_2^{-}. It is due to the presence of one electron in the antibonding molecular orbital in H2−\mathrm{H}_2^{-}.
Practice Chemical Bonding and Molecular Structure on Quantrex Academy →

More from Chemical Bonding and Molecular Structure

Which of the following molecules shows sp^3d hybridisation? MHT CET Medical 2026Identify a pair of molecules having zero dipole moment. MHT CET Medical 2026Identify the correct decreasing order of lattice enthalpy for metal fluorides from… MHT CET Medical 2026Which of the following bonds is expected to be the most polar? MHT CET Medical 2026Which of the following species is paramagnetic? MHT CET Medical 2026What is the number of bonding and antibonding electrons, respectively, in Li_2 molecule? MHT CET Medical 2026What is the number of electrons in bonding molecular orbitals and antibonding molecular… MHT CET Medical 2026Identify the hybridization in BF_3 molecule. MHT CET Medical 2026 Full Chemical Bonding and Molecular Structure list All JIPMER PYQs