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  • Atomic number of an element is 11 and mass number of that...
Multiple choice

Atomic number of an element is 11 and mass number of that element is 23. How many neutrons are present in that atom?

  1. 11

  2. 12

  3. 22

  4. 23

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B Correct answer
Explanation

The number of neutrons is calculated by subtracting the atomic number (protons) from the mass number (protons + neutrons). Here, 23 - 11 = 12.

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