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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
Question
An element has atomic number 2, it belongs........ group.
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Answer

An element has atomic number 2, it belongs $2$ group.
Explanation:
An element belongs to period 2 and group $2^{\text {th }}$ number of valence electrons in the atoms of this element.

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