Question

How many
many neutrons
and
electrons
are
present
in the
nuclei
of
24
12 mg
and
56
26
Fe​

Answer 1

The number of neutrons and protons are shown below.

Nucleus Atomic number, Z

Mass number, A

Number of protons = atomic number

Number of neutrons =A−Z

6

13

​

C

6  13  6 13−6=7

8

16

​

O  

8  16  8  16−8=8

 

12

24

​

Mg  12  24  12  24−12=12

 

26

56

​

Fe  26  56  26  56−26=30

 

38

88

​

Sr  38  88  38  88−38=50