The mass number of a boron atom with 4 neutrons is "9".
Given:
- Atomic number of boron = 4
- Number of neurons = 4
As we know the formula,
→ \(Number \ of \ neurons = Mass \ number -Atomic \ numbe\)
or,
→ \(Mass \ number =Number \ of \ neurons +Atomic \ number\)\
By substituting the given values, we get
→ \(= 4+5\)
→ \(= 9\)
Thus the above answer is correct.
Learn more about neuron here:
https://brainly.com/question/5357409
