Yes, chemical similarities exist between hydrogen and alkali metals; also the electron configuration has a parallel.
Hydrogen
There is no metal like you describe in your question. Hydrogen is in Group 1, but is not an alkali metal. It is a gas at standard temperature. It does rarely behave like an alkali metal, and it does have only one electron. Hydrogen is in Group 1 primarily because of its electron configuration, which is 1s1. All of the alkali metals also have one electron in their outermost s orbital.
Hydrogen.
No, it isn't. One of the clues of telling that is isn't, is that hydrogen is a gas, and If it was an alkali METAL, it would not be a gas, but a metal. Its place on the table does make sense, though; hydrogen tends to behave like other members of it's column in chemical reactions. For example, All of the alkali metals, and hydrogen Combine with oxygen to form the compound X2O, where "X" is either Hydrogen, Lithium, Sodium, Potasium, Rubidium, Cesium, or Francium.
When an alkali metal like sodium or potassium reacts with water, it produces hydrogen gas. This reaction is highly exothermic and can be violent. The alkali metal displaces hydrogen from water molecules, leading to the formation of hydrogen gas and the corresponding metal hydroxide.
Hydrogen shares some properties with alkali metals, particularly in its ability to lose one electron to form a cation with a +1 charge like alkali metals. However, hydrogen is a nonmetal and not a metal like the alkali metals.
Hydrogen
Hydrogen, it is one of the most difficult elements to classify: it can form +1 ions like the alkali metals, it can form -1 ions like the halogens, it is a nonmetal.
I am either Copper, silver or Gold.
Hydrogen is in group 1 because it has one electron in its outer shell, similar to other group 1 elements. Additionally, hydrogen can behave like a metal in certain conditions, such as when it loses an electron to form the H+ ion.
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.
You think probable to hydrogen.