Why is hydrogen not part of the alkali metal or halogen chemical family?

Answer 1

Hydrogen is really in a category by itself; it isn't normally considered an alkali metal. Some periodic tables put it at the top center of the chart (that is, not in any of the groups) to emphasize that.

Answer 2

For a compound to be a base (alkalis are soluble bases) it must be able to receive a hydrogen atom and since hydrogen cant lose itself, it is not an alkali (nor an acid)

therefore no elements are alkaline or acidic

Answer 3

No. Hydrogen is generally considered to be the sole member of its own family. In many periodic tables, it's placed in a central location horizontally (above the transition metals) to emphasize the fact that it's not an alkali metal even though it has a common valence of +1, and also not a halogen even though it has a (slightly less) common valence of -1.

Answer 4

The elements on the Periodic Table are grouped largely by the way their electrons are configured.

Hydrogen is grouped with the alkali metals because like them it has one valence electron.

Answer 5

Hydrogen isn't classified as an alkali metal because it exhibits several properties that are not found in the alkali metal group, including the tendency to be found as a diatomic molecule, a tendency to form weak bonds with other bound hydrogen atoms nearby, weak electromagnetism, a low activity series placement, and the tendency to be found as a gas. Because of all this, it's impossible to classify it with any group, although it does seem to be closest to nonmetals.

Answer 6

Because it is a gas and it is not considered a "metal"

thats all i know

Answer 7

Hydrogen is above the alkali metals because it only has one electron, while the alkali metals all have one electron in their OUTER shells.

Answer 8

Hydrogen is not included because it only has one proton and electron, and therefore does not have the same reactive properties as say, lithium or Potassium.