Question

explain atomic size in modern periodic table ​

Answer 1

Atomic size is the distance from the nucleus to the valence shell where the valence electrons are located. ... There are three factors that help in the prediction of the trends in the Periodic Table: number of protons in the nucleus, number of shells, and shielding effect.

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Answer 2

Atomic size is the distance from the nucleus to the valence shell where the valence electrons are located.

There are three factors that help in the prediction of the trends in the Periodic Table: number of protons in the nucleus, number of shells, and shielding effect.

As an example, the internuclear distance between the two hydrogen atoms in an H2 molecule is measured to be 74 pm. Therefore, the atomic radius of a hydrogen atom is 742=37 pm 74 2 = 37 pm .

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