Why is hydrogen located in a group with reactive metals when it is a gas?

Answer 1

Hydrogen is placed in the same group as the alkali metals because like the other alkali metals, it only has one valence electron (electron in the outermost energy level of the atom). Even so, many consider Hydrogen separately because unlike the other alkali metals, it cannot lose its one and only valence electron. Mendaliv put Hydrogen there because it could not go anywhere else.

Answer 2

Hydrogen is in some ways very similar to the reactive metals. In fact, when it is under sufficient pressure at sufficiently low temperature, it actually does become a solid metal, with all the usual properties of a metal (metallic color, electrical conductivity, and so forth). Metals are elements that have between one and three valence electrons; hydrogen fits perfectly into that definition because it has one valence electron. Metals tend to undergo chemical reactions in which they lose electrons, and so does hydrogen. In every respect except for being a gas at normal temperatures and pressures, hydrogen is a metal.

Answer 3

In reactivity series Hydrogen is selected as standard , because it has a tendency to accept the electrons from several metals and also have a tendency to donate the electrons to several other metals, the electrode potential of hydrogen is supposed to be zero.

Answer 4

Hydrogen would be grouped with the alkali metals because it has one (1) electron in its outer energy level, like the other alkali metals.

Answer 5

Group 1 elements have 1 valance electron, which is the reason for their reactivitym not because they are metals.

Answer 6

Hydrogen is a non-metal that can lose an electron and become electro-positive, a property common to metals. It can also displace some metals from their salt solutions.

Answer 7

to compare the metals with hydrogen