Question

state the modern periodic law for ckassification of elements.How many groups and periods are there in the modern periodic table​

Answer 1

Answer:

there are 18 groups and 7 periods in the periodic table. mark brainliest. Modern periodic law-properties of elements are the periodic functions of their atomic number.

hope it helps uh...

Answer 2

Answer:

The modern periodic law states that physical and chemical properties of elements are periodic functions of their atomic number

There are 7 periods and 18 groups in the periodic table

Explanation:

Hope this helps you