Question

no fixed position is given to hydrogen in Modern Periodic Table why​

Answer 1

Answer:

Hydrogen had no fixed position in Mendeleev's Periodic Table because it resembles alkali metals by forming positive ions and resembles halogens by forming diatomic molecule.

Explanation:

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Answer 2

Because Hydrogen properties resembles with both alkali metals and Halogens as it can loose one electron (e-) like alkali and gain one electron 1e- like Halogens.