Question

atomic size decrases along the period.Give reason

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Answer 1

Answer:

While moving towards the right in a period, the number of protons in the nucleas increases, which applies a greater force of attraction. This attracts all the electrons towards the nucleus and hence the size of atom decreases.

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Answer 2

Answer:

This happens because the no. of electrons increase and they have higher nuclear charge.

Thus, the nuclear charge dominates over the no. of electrons.

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