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Atoms and Molecules — Science STD 10 — Question

Tamilnadu BoardEnglish MediumSTD 10ScienceAtoms and Molecules1 Mark
Question
What are isotopes? Give an example.
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Answer

Atoms of the same element that have same atomic number but different mass number are called isotopes.
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\text { e.g. }{ }_1 H ^1{ }_1 H ^2{ }_1 H ^3 \text {. }
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