A) 32
B) 42
C) 30
D) 34
Correct Answer: C
Solution :
Number of electrons in \[{{M}^{2+}}=24\] \[\therefore \]number of electrons in M = 26 i.e., atomic number (Z) = 26 Mass number (A) = 56 \[\therefore \]number of neutrons \[=A-Z=56-26=\text{ }30.\]You need to login to perform this action.
You will be redirected in
3 sec