Question

Explain why he2 does not exist but h2 does explain using molecular orbital theory

Answer 1

Answer:

Explanation:

He2 molecule does not exist since the molecular orbital theory states that bond order of a element is given by Nb-Na/2 in He2 the 4 electron are accomadated in sigma 1s and sigma star 1s therefore Nb - Na =0 since bond order cannot be zero therefore it does not exist

Whereas in case of H2 molecules enter in sigma 1s orbital therefore bond order is 1.

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Answer 2

the atomic orbitals with electrons using the aufbau principle as well as the ... The simplest example of a molecule is H2, which has two nuclei and two electrons.