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CBSE Class 11-science Answered

Hydrogen and noble gases are present in which group of the Mendeleev's periodic table?
Asked by Topperlearning User | 14 Aug, 2014, 03:35: PM
answered-by-expert Expert Answer

In Mendeleev's periodic table the position of hydrogen was not certain. It was placed in first as well as eighth group as it resembles both alkali metals and halogens.

Answered by | 14 Aug, 2014, 05:35: PM
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