Question

Why and how are elements arranged in 4th period?

Answer 1

4 the period starts from K i.e.potassium and total no

of elements are 18.

Answer 2

Answer:

The Question is => WHY and HOW elements are arranged in 4th period? OK

Explanation:

First we'll see WHY :

The elements are arranged in 4th period because they are all having same electronic shells.

Now HOW:

Elements are arranged in 4th period by increasing atomic number from left to right in a period.

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