hydrogen (h) atoms have one electron and exist as diatomic molecules (h2). Helium atoms have 2 electrons and exist only as a single helium atom. explain why they differ in this way
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1
Answer:
Because one hydrogen atom combine with other hydrogen atom because they can not exist alone as there octet is not complete
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Explanation:
Helium has completed its octet so it donot want any electron. Hydrogen for full filled its octect
it want a electron then it share its electron to another hydrogen atom by covalent bond
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