Question

Why is the position assigned to hydrogen in periodic table considered anomalous????

Answer 1

hydrogen due to its unique electonic configuration of 1 can act as both electropositive by donating the electron
and also act as electronnegative by accepting an electron
It is one of the reasons why hydrogen s position is considered anomalaous

Answer 2

Hydrogen have 1 electron and one proton in a outer most shell and it has one shell and it is placed in a first group which is similar to the alkali metals because both have one (1) valence electron