Periodic Classification of Elements — Science STD 10 — Question
CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
Question
Name the two elements whose valencies are equal to their group number.
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Answer
For group II elements, the group no. (2) is equal to the valency of the elements present in this group. So two such elements belonging to group II are Calcium and Magnesium.
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