it has one electron in its outer energy level like all alkali metals
has one electron in its outer energy level
Because Hydrogen is a gas that has metal in the element
No, hydrogen is a nonmetal. It is grouped with the alkali metals because it has a similar outer shell electron configuration as they do. Hydrogen is something of an oddball among elements. It is rather unique, but share some characteristics with both the halogens and the alkali metals. When the periodic table is divided into groups (noble gasses, halogens, alkali metals, etc.) hydrogen is usually put in its own group.
Alkali metals can be substituted for hydrogen. Any of them. They include lithim (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs) and francium (Fr). The alkali metals are in group one of the periodic table of the elements, and are all stacked up in the column below hydrogen. All the alkali metals are all organized with a lone electron in their outer most shell, or valence shell (in the neutral atom) and all of the alkali metals would like to loan out that electron to anything that would like to borrow it. It turns out that the reactivity of alkali metals are least to greatest from the top of the column to the bottom. This is because of electron screening. A link to our friends at Wikipedia is provided.
Hydrogen has a single valence electron, just like the alkali metals. Unlike them, however, hydrogen prefers to covalently bond instead of forming an ionic bond.
Alkali Metals
Because Hydrogen is a gas that has metal in the element
No, hydrogen is a nonmetal. It is grouped with the alkali metals because it has a similar outer shell electron configuration as they do. Hydrogen is something of an oddball among elements. It is rather unique, but share some characteristics with both the halogens and the alkali metals. When the periodic table is divided into groups (noble gasses, halogens, alkali metals, etc.) hydrogen is usually put in its own group.
Alkali metals can be substituted for hydrogen. Any of them. They include lithim (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs) and francium (Fr). The alkali metals are in group one of the periodic table of the elements, and are all stacked up in the column below hydrogen. All the alkali metals are all organized with a lone electron in their outer most shell, or valence shell (in the neutral atom) and all of the alkali metals would like to loan out that electron to anything that would like to borrow it. It turns out that the reactivity of alkali metals are least to greatest from the top of the column to the bottom. This is because of electron screening. A link to our friends at Wikipedia is provided.
Hydrogen has a single valence electron, just like the alkali metals. Unlike them, however, hydrogen prefers to covalently bond instead of forming an ionic bond.
Alkali Metals
No. Hydrogen is a nonmetal. It is only put in the alkali metal column because it has a similar electron configuration.
Hydrogen would be one that I'd pick out just because it doesn't exactly have many similar properties to the alkali metals. At least helium is gaseous (as are the noble gases).
The electron configuration of hydrogen is similar with that of alkali metals.
They are the Alkali Metals (this excludeds hydrogen because it is a gas).
Because hydrogen resembles both Halogens and Alkali Metals.
Group 1- the Alkali metals and also Hydrogen.
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.