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The position of hydrogen could not be justified by Mendeleev.
The position of hydrogen could not be justified by Mendeleev.
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Solution
The correct option is A True
The position of hydrogen in the Mendeleev's periodic table is uncertain. It has been placed in 1A group with alkali metals, but certain properties of hydrogen resemble those of halogens. So, it may be placed in the group of halogens as well. This was one of the limitations of Mendeleev's periodic table.
The position of hydrogen in the Mendeleev's periodic table is uncertain. It has been placed in 1A group with alkali metals, but certain properties of hydrogen resemble those of halogens. So, it may be placed in the group of halogens as well. This was one of the limitations of Mendeleev's periodic table.
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