Question

what was the reason to put hydrogen in first place at periodic table​

Answer 1

Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.

Atomic Number: 1

Atomic Weight: 1.0079

Atomic Radius: 78 pm

Hope you got correct✔ answer...xd..

Answer 2

Answer:

Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals.Aug 15, 2020

Atomic Number: 1

Atomic Weight: 1.0079

Atomic Radius: 78 pm

Hope it helps you if u satisfy with my answer plz like my answer and follow me and also mark me as brainlist.