Question

calculate the number of neutron in the following Phosphorus iron and bromine​

Answer 1

Answer:15, 29, 45 respectively

Explanation:

Number of neutrons = Atomic mass - atomic number

Now ,

1) phosphorus=>

Atomic mass=30

- atomic number=15

= 15 neutrons

2) iron=>

Atomic mass=55

- atomic number=26

= 29 neutrons

3) bromine=>

Atomic mass=80

- atomic number=35

= 45 neutrons