What happens to the atomic mass of the elements moving from left to right within a period?

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19-07-2017
Chemistry

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What happens to the atomic mass of the elements moving from left to right within a period?

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Аноним Аноним · Answer 1 · 2018-10-23T05:12:27+02:00

Аноним Аноним

23-10-2018

As you move across a period, the atomic mass increases because the atomic number also increases. ... The atomic mass for any given atom mainly comes from the mass of the protons and neutrons.

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