. How many groups and periods are there in the modern periodic table
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:
(i) down a group and (ii) from left to right in a period
Best Answer
There are 18 groups and 7 periods in the modern periodic table
(i) Atomic size and metallic character of the elements increases down a group
(ii) Atomic size and metallic character of elements decreases from left to right in a period
Metallic character of the element is decreased
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