Science, asked by Ayushgopal, 1 year ago

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Question=>A molecule of H2 exists while that of He2 does not exist.Explain?

Answers

Answered by Anonymous
2
He2 does not exist because it is noble gas it doesn't form any bond except xenon, it exist in monoatomic while hydrogen can form bond to be stabilise.
Answered by Satyamrajput
2
Heya....✋

Hydrogen atom has only one electron in its valence shells,i.e.,1s^1. The two such half filled atomic orbitals combine to form a molecular orbital having two electrons with opposite spins. They occupy such a position between the two nuclei so that the attractive forces increase. But helium atom has already a valence shell,i.e.,1s^2. Therefore, the atomic orbitals of the two atoms do not combine. Thus, a molecule of H2 exists while that of He2 does not.

Hope it helps✅
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