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08/10/2021 5:00 pm
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(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?
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08/10/2021 5:01 pm
(a) On moving from left to right in a period of the periodic table, the atomic size decreases. As we move from left to right in a period, the atomic number of elements increases which means that the no. of protons and electrons in the atoms increases. Due to large positive charge on the nucleus, the electrons are pulled in more close to the nucleus and the size of atom decreases.
(b) On moving from left to right in a period, the metallic character of elements decreases.