Which substance is a compound? water gold oxygen hydrogen
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water is a compound
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The answer is: the compound substance out of the 4 is water, which is a chemical compound of hydrogen and oxygen.
A water molecule is made of two hydrogen atoms and one oxygen atom.
A single oxygen atom comprises six electrons in its external shell, which can hold a total of eight electrons.
When two hydrogen atoms are bound to an oxygen atom, the outside electron shell of oxygen gets filled.
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