Question

How many neutrons are there in ${}_{38}^{88}Sr$?

• A. 38
• B. 50
• C. 126
• D. 88

Answer 1

Answer: (B)

50

In ${}_{38}^{88}Sr$
Atomic number = No. of protons = No. of electrons = 38
Atomic mass = 88
Number of neutrons = 88 - 38 = 50