Periodic Classification of Elements — Science STD 10 — Question
CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
Question
A periodic table consists of horizontal rows of elements called _____________ and vertical columns called.
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Answer
A periodic table consists of horizontal rows of elements called vertical columns of elements and vertical columns called. Explanation:
All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.
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