Question

Why was it not possible to give position of hydrogen in mendeleev periodic table 0?

Answer 1

Ahoy!!!!! O_O

Here is the reason >>>>down below<<<<<

See , Hydrogen resembles both like the Alkali metals and the halogens. Hence, it was placed in IA group VI B group and could not be given a fixed position in Mendeleev’s Periodic Table.

HYDROGEN :-  NO.of electrones----- (only 1 )

                              so ..the valence electron ------also 1

And if talking about MODERN PERIODIC TABLE hydrogen can be arranged in halogen family i.e. group no. 17 but hydrogen does not possess the properties of halogen family. That's why hydrogen is given its position in the first group and first period of the table ....

NOTE:----------------------------------------------------------------------------------------------------------------------------------------------

Halogen :- Any of the elements fluorine, chlorine, bromine, iodine, and astatine, occupying group 17 of the periodic table are the HALOGENS as they are missing an electron from their outermost shell, they react readily with most metals to form salts.........

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