Atomic Structure Question 87
Question: The mass number of an anion, $ {X^{3-}} $ , is 14. If there are ten electrons in the anion, the number of neutrons in the nucleus of atom, $ X_2 $ of the element will be
Options:
A) 10
B) 14
C) 7
D) 5
Show Answer
Answer:
Correct Answer: C
Solution:
$ _7X^{14},,n=14-7=7 $
