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Structure of the Atom — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
If an element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
✓

Answer

No. of neutrons = Mass No. - Atomic no.
= 24 - 12
= 12

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