Question

$\bold\Question$

(a) How many periods are there in the Modern Periodic Table of elements?
(b) How do atomic radius, valency and metallic character vary down a group?
(c) How do the atomic size and
metallic character of elements vary as we move from left to right in a period?
[ Class 10 ]

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Answer 1

Explanation:

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only answer (a)=seven periods

The atomic number of each element is written above the symbol. A period is a horizontal row of the periodic table. There are seven periods in the periodic table, with each one beginning at the far left.

Answer 2

Answer:

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