Question
Physics Question on Atomic Physics
a-particle consists of:
A
2 protons and 2 neutrons only
B
2 electrons, 2 protons and 2 neutrons
C
2 electrons and 4 protons only
D
2 protons only
Answer
2 protons and 2 neutrons only
Explanation
Solution
The correct option is (A) :2 protons and 2 neutrons only