(a) How does the size of atoms (atomic size) generally vary in going from left to right in a period of the periodic table? Why does it vary this way?(b) What happens to the metallic character of the elements as we move from left to right in a period of the periodic table?


(a) As we move from left to right across the period, atomic size decreases as atomic number increases. The number of protons and electrons increases and due to the large positive charges on the nucleus, the electron is pulled inside more closer, and thus the size of the atom decreases.

(b) The metallic character of the element decreases as we move from left to right in a period.

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Updated on: 10-Oct-2022

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