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mass of an atom of element x is equivalent to the total mass of 7 hydrogen atoms. what element represent x ?
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mass of an atom of element x is equivalent to the total mass of 7 hydrogen atoms. what element represent x ?

User Purushoth
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Answer:

lithium

Step-by-step explanation:

The mass of hydrogen is 1 u, so the mass of element x is 7 u, which is approximately the atomic mass of lithium.

User Mancaus
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