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

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

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60782 Points
2 years ago
Atomic mass = number of (protons + neutrons) 4 = 2 + number of neutrons Number of neutrons = 4 – 2 = 2 Therefore, helium has 2 neutrons.

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