Question

atomic mass goes on decreasing while going from right to left​

Answer 1

Explanation:

Atomic size gradually decreases from left to right across a period of elements. ... This means that the nucleus attracts the electrons more strongly, pulling the atom's shell closer to the nucleus. The valence electrons are held closer towards the nucleus of the atom. As a result, the atomic radius decreases.....

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Answer 2

Answer:

Atomic size gradually decreases from left to right.

Not atomic mass

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