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Hydrogen gas exists as H2 rather then H. Why is this so?

Question #38646. Asked by crmrealquick.

Answer has 4 votes
21 year member
2091 replies

Answer has 4 votes.
Because hydrogen gas exists as a MOLECULE of 2 atoms

Sep 10 2003, 5:25 PM
Answer has 6 votes
Currently Best Answer
21 year member
3194 replies

Answer has 6 votes.

Currently voted the best answer.
This is because hydrogen atoms each have one electron and require only one more for the very stable electron arragement of helium atoms. Hydrogen atoms obtain this arrangement by sharing electrons with each other. The charge of the resulting pair of electrons buzzing round the two hydrogen atoms locks the atoms in pairs to form hydrogen molecules (H2). This electron sharing with hydrogen atoms gives rise to a strong chemical bond called a hydrogen bond (a strong covalent bond).

Sep 10 2003, 7:31 PM
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