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The number of neutrons in a helium atom is TWO (2).

  • Helium (He) is the second chemical element in the periodic table.

  • Helium consists of two (2) protons and two (2) neutrons in its atomic nucleus.

  • In consequence, the atomic number of helium is equal to two (2).

  • The Sun contains approximately 25% He, which is generated by solar fusion.

In conclusion, the number of neutrons in a helium atom is TWO (2).

Learn more about helium here:

https://brainly.com/question/5596460

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Answer:

[tex]\huge\boxed{\bf\: Number \: of \: neutrons = 2}[/tex]

Explanation:

Here, we need to find the number of neutrons present in a Helium atom.

Helium comes right after Hydrogen as the second element in the Modern Periodic Table. This means that, the atomic number of Helium is 2.

We know that, atomic number = number of protons / number of electrons  . So, the total number of protons in Helium is also 2.

The atomic mass of Helium = 4 u.

According to the formula,

Atomic mass = Sum of the nucleons (neutrons + protons)

4 = neutrons + 2

4 - 2 = neutrons

2 = neutrons present in a Helium atom.

•°• The total number of neutrons present in a Helium atom is 2.

[tex]\rule{150}{2}[/tex]

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