Q84 · CSIR NET Chemistry, June 2016
Paper: CSIR NET June 2016 · Subject: Physical Chemistry · Chapter: Quantum Chemistry · Topic: Hydrogen Atom · Marks: 2 · Difficulty: Medium
The spatial part of an excited state $b\,{}^{3}\Sigma_u^+$ of hydrogen molecule is proportional to $[1\sigma_g(1)\sigma_u(2) - 1\sigma_g(2)\sigma_u(1)]$. Using LCAO-MO expansion of $1\sigma_g$ and $1\sigma_u$ in terms of 1s-atomic orbitals, one can infer that this wavefunction has
(a)only ionic parts
(b)only covalent parts
(c)both ionic and covalent parts
(d)neither ionic nor covalent parts
Answer
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Explanation
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