What does the "first series","second series" and "A", "B" stand for in the Mendeleev's periodic table?
Asked by Isha B
25th January 2014,
12:42 PM
Answered by Expert
Answer:
Hi Isha,
Mendeleev's periodic table contains eight vertical columns of elements called 'groups' and seven horizontal rows called 'periods', Each group has two sub-groups A and B. The properties of elements of a sub-group resemble each other more markedly than the properties of those between the elements of the two sub-groups.
First series and second series are periods.
Answered by Expert
30th January 2014,
5:13 PM
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