The nucleon number and the proton number of a neutral atom of an element are 23 and 11 respectively. How many neutrons are present in the atom?
A
11
B
12
C
23
D
34
Verified Correct Answer: B.
Physical Principles & Numerical Solution
Nucleon number = Proton number + Neutron number
Neutron number = Nucleon number − Proton number
Neutron number = 23 - 11 = 12
The number of neutrons present in the atom is 12
Source: Myschool Past Questions Archive (Record #33947)