Question

The longest period in the modern periodic table is

• A. 6th
• B. 4th
• C. 2nd and 3rd both
• D. 5th

Answer 1

The correct option is A

6th

Explanation of correct option -

1. The period which has maximum elements is called the longest period.
2. In the Modern periodic table, the 6th period is the longest period.
3. 6th period contains 32 elements, whereas the 7th period is an incomplete period.

Explanation of Incorrect option -

Since the longest period is the 6th period, therefore, other options are incorrect.

Conclusive statement - The correct answer is option A