How many groups and periods are there in the modern periodic table? How do the atomic size and metallic character of elements vary as we move : (a) down a group and (b) from left to right in a period?? Hey answer it frnds plzzz
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shekhar2557
The modern periodic table consists of18 groups and 7 periods. i) Down the group, the atomic size and metallic character of elements increase. ii) On moving from left to right in a period, the atomic size and metallic character of elements decreases.Please mark as brainlist......
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