How many groups or periods are important in Ch- Periodic classification of elements?
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2
Answer:
eight
According to Mendeleev “the properties of the elements are a periodic function of their atomic masses.” The table consists of eight vertical column called 'groups' and horizontal rows called 'periods'.
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2
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answer
Explanation:
in periodic table
GROUP-1, 2,13,14,15,16,17,18.are important.
period-1,2,3,4,5,6 are important.
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