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Periodic Classification of Elements — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10SciencePeriodic Classification of Elements1 Mark
Question
How many groups and periods are present in the modem periodic table?
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Answer

There are 18 groups and 7 periods present in the modern periodic table. Modern periodic table states that properties of element are periodic function of their atomic number.

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