Question

$\huge \tt {\underline{ \underline♡ \red{\: \: question \: \: }{ \underline♡}}}$


Helium atom has an atomic mass of 4u and two protons in its nucleus. How many neutons does it have ?

​

Answer 1

Answer:

The mass of an atom is given by the sum of the masses of protons and neutrons present in the nucleus. Since helium atom has a atomic mass of 4 u and it has two protons. Two protons contribute 2 u to atomic mass. Hence, it must contain 2 neutrons.

Explanation:

Mark me Brainliest

Answer 2

Answer:

Therefore, No. of Neutrons in Helium atom = 2.