why heluim is monoatomic molecule
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Explanation:
If two of them share electrons, each has a share in two electrons, which is a full shell. Helium is1s^2, which is a full shell, so He is stable as is without forming diatomic molecules. Explanation: ... The noble gases, such as helium and neon, rarely form molecules at all; they are monatomic.
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Answer:helium is a monoatomic molecule as
Explanation: Helium is a member of the noble gases which means it has a filled outer shell of electrons. With a full outer shell, it doesn't take part in most chemical reactions without a lot of forcing. It certainly won't react in the way required to form He2.
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