![An element with atomic number 40 is placed in period](https://www.gkseries.com/blog/wp-content/uploads/2022/04/An-element-with-atomic-number-40-is-placed-in-period.png)
Q. An element with atomic number 40 is placed in period.
A. 5
B. 6
C. 4
D. 3
Answer: 5
A. 5
B. 6
C. 4
D. 3
Answer: 5
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