Question

The atomic number and mass number of an element are 7 and 14 respectively. How many neutrons are present in its nucleus?  ​

Answer 1

Answer:

neurons are 7

Explanation:

because atomic mass will contain neutron as well as protons so protons is same as atomic no. therefore neurons will be equal to 7

Answer 2

Explanation:

As Atomic no. = No. of protons

and Mass no. = No. of protons + No. of neutrons

ATQ,

Atomic no. =7

Mass no.=14= 7+ No. of neutrons

So No. of neutrons =14-7=7