A) 1, 2 and 3 are correct
B) Only 1 and 2 are correct
C) Only 1 and 3 are correct
D) Only 2 and 3 are correct
Correct Answer: B
Solution :
Neutrons in \[{{\,}_{19}}{{K}^{39}}=39-19=20\] Neutrons in \[{{\,}_{20}}C{{a}^{40}}=40-20=20\] Hence, these nuclei are isotones.You need to login to perform this action.
You will be redirected in
3 sec