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Structure of the Atom — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
What is the relationship between an atom containing 11 protons, 11 electrons ad 11 neutrons, and another atom containing 11 protons, 11 electrons and 12 neurtrons?
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Answer

Isotopes.

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