Seudónimo Seudónimo

13-09-2017
Biology

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how do atomic mass and atomic number compare for helium? look up a periodic table to see the square for helium.

the atomic mass is greater.
the atomic number is greater.
the atomic mass and atomic number is qual.
helium does not have an atomic number.

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talktoisabelw talktoisabelw

13-09-2017

I believe the answer is C. (:

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izzyhoon877 izzyhoon877

18-09-2017

A. The atomic mass is greater

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