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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
Question
Out of the three elements Ca, Mg. Sr which one will have atom of biggest size?
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Answer

Out of this three 'strontium' will have larger Atomic size, because strontium belongs to higher period and as we move down the group new shells are added up and hence Atomic size increases.

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