![An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?](https://www.gkseries.com/blog/wp-content/uploads/2022/04/An-element-X-has-mass-number-40-and-contains-21-neutrons-in-its-atom.-To-which-group-of-the-Periodic-Table-does-it-belong.png)
Q. An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the Periodic Table does it belong?
A. Group 1
B. Group 4
C. Group 2
D. Group 3
Answer: Group 1
A. Group 1
B. Group 4
C. Group 2
D. Group 3
Answer: Group 1
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