Question

explain Mendeleev's periodic law and modern periodic law

Answer 1

According to Mendeleev's periodic law: The property of elements are periodic function of their atomic masses.

According to Modern periodic law: The property of elements are periodic function of their atomic number.

Answer 2

Mendeleev's Periodic Law

$<font size="+1"><p style="font:italic small-caps bold 18px/24px Garamond, Georgia, Times, Serif;width:200px;">When elements are arranged in order of their increasing atomic masses, elements with similar properties get repeated after certain regular intervals.</p></font>$

Modern Periodic Law

$<font size="+1"><p style="font:italic small-caps bold 18px/24px Garamond, Georgia, Times, Serif;width:200px;"></strong><strong>The</strong><strong> </strong><strong>properties</strong><strong> </strong><strong>of</strong><strong> </strong><strong>elements</strong><strong> </strong><strong>are</strong><strong> </strong><strong>a</strong><strong> </strong><strong>periodic</strong><strong> </strong><strong>function</strong><strong> </strong><strong>of</strong><strong> </strong><strong>their</strong><strong> </strong><strong>atomic</strong><strong> </strong><strong>numbers</strong><strong>.</strong><strong> </strong><strong>Modern</strong><strong> </strong><strong>Periodic</strong><strong> </strong><strong>Law</strong><strong> </strong><strong>Table</strong><strong> </strong><strong>is</strong><strong> </strong><strong>based</strong><strong> </strong><strong>on</strong><strong> </strong><strong>atomic</strong><strong> </strong><strong>numbers</strong><strong>.</strong><strong></p></font>$