Write the total number of period and groups in modern period table .how does a metallic character of element very on moving form left to right in a period and down a group
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metallic character in period decreases
in group it increases
in group it increases
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Period are total 7
Groups are 18
On moving left to right the metallic character decreases because their atomic size deceases and the tendency to loose electron also deceases..
On moving down a group the metallic character increases... because their atomic size increases and tendency to loose electron increases.
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