Question

The number of shells in the elements of the 3rd period is.

• A. 1
• B. 2
• C. 3
• D. 0

Answer 1

The correct option is C

3

Answer: Correct option (C)

Explanation for correct option.

1. The period number is equal to the shell number.
2. Since the element belongs to the 3rd period, therefore, it has 3 shells.

Explanation for incorrect option.

Since the period number is equal to the shell number, therefore option (C) is correct and others are wrong.

Conclusion.

The element that belongs to the 3rd period has 3 shells.