Question

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

Answer 1

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$<u >$ The modern periodic table consists of 18 groups and 7 periods.

(a) Down a group, the atomic size and metallic character of elements increases.

(b) When we move from left to right in a period, the size and the metallic character of elements decreases.

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Answer 2

❤❤Høla mate❤❤

The modern periodic table consists of 18 groups and 7 periods.

(a) Down a group, the atomic size and metallic character of elements increases.

(b) When we move from left to right in a period, the size and the metallic character of elements decreases.


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