Question

state modern periodic table.

Answer 1

Heya Mate!!!

Periodic table:- It is the well defined table in which elements are grouped according to their atomic numbers...

Periodic table contains 18 vertical columns called groups...
and 7 horizontal rows called Periods....


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Answer 2

✌️HEYA DEAR!!
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HERE IS UR ANSWER
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$\bf{MODERN\: PERIODIC \:TABLE}$
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◆HENRY MOSELEY PUT FORWARD THE MODERN PERIODIC TABLE , WHICH WAS BASED ON ATOMIC NUMBER. ATOMIC NUMBER IS EQUAL TO THE NUMBER OF ELECTRONS .

HE STATED THAT $\bf{" the\: physical\:and\: chemical\\: properties\:of \:the\: elements \:are\: periodic\\: functions\: of \:their\: atomic\: number.}$
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.$\huge{THANKS}$