how many neutrons are in Barium-137 a-137 b-81 c-112 e-56
Chemistry · High School · Sun Jan 24 2021
llm
Answered on
Given :
Barium -137
Atomic mass of Barium = 137
Atomic number = 56
We know, atomic number is always equal to number of protons. Hence, protons = 56
Atomic mass of any element = protons + neutrons
137 = 56 + neutrons
neutrons = 137 - 56
= 81