Hydrogen gas (H2) is used as fuel in rockets and space shuttles. The two hydrogen atoms in H2 gas are bonded to each other by ___.
A
gaining of electrons
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B
forming ions
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C
sharing an electron pair
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D
transfer of electrons
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Solution
The correct option is C sharing an electron pair The hydrogen atoms in hydrogen gas (H2) are held together by a covalent bond. A covalent bond is formed by sharing of electron pair(s). The two electrons (one from each hydrogen atom) belong to both atoms.