Question

calculate no. of electrons , protons, mass no. of an atoms whose atomic no. is 2 and newtron number is 2​

Answer 1

Answer:

To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number:

1. number of protons = atomic number.

2. number of electrons = atomic number.

3. number of neutrons = mass number - atomic number.

Hope it helps u

#NAWABZAADI

Answer 2

Its atomic number is 2, so it has two protons in its nucleus. Its nucleus also contains two neutrons. Since 2 + 2 = 4, we know that the mass number of the helium atom is 4. Finally, the helium atom also contains two electrons since the number of electrons must equal the number of protons.

PLZ MARK HER AS BRILLIANTEST