Question

an element has an atomic mass number of 16 and an atomic number of 7. the element has __ protons and __ neutrons

Answer 1

Answer:

7 protons and 9 neutrons

Explanation:

As we know,

Atomic number of an element is the total number of proton in its atom. Thus,

Number of proton $= 7$

Mass number is equal to the sum of number of proton and number of neutron

Mass number $=$ Number of Proton $+$ number of neutron

Putting the available values in above relation, we get -

$16 = 7 +$Neutron

Neutron $= 16 -7$

$= 9$

Hence there are 7 protons and 9 neutrons

Answer 2

7 protons and 9 neutrons