Why hydrogen is in IA group in periodic table?

Answer 1

Hydrogen is in group 1A because it has one electron in its valence shell. But it's probably best to think of hydrogen as a unique, and ubiquitous, element that really belongs with the nonmetals such as boron, carbon, etc.

If you can look at a periodic table with the elements grouped in colored categories you will see that hydrogen belongs with about ten other elements called the nonmetals.

Hydrogen is so unique it doesn't fit with any basic category, just in 1A because of 1 electron in the valence shell.

Answer 2

Hydrogen is placed in Group IA of the Periodic Table because it has one electron in its outer shell, similar to other elements in that group. This electron configuration allows hydrogen to exhibit similar characteristics, such as forming +1 ions in chemical reactions. However, hydrogen's placement in this group is somewhat debated due to its unique properties.

Answer 3

because it is the most abundant and flammable are mostly used element.