For one thing, it has some distinct chemical properties. For instance, it reacts with every oxidising element. Please see the link.
The halogens and hydrogen
hydrogen
Oxygen, Hydrogen, halogens
Yes
Hydrogen is a nonmetal element, while halogens are a group of highly reactive nonmetal elements on the periodic table. Hydrogen forms diatomic molecules (H2), while halogens exist as diatomic molecules in their natural state (e.g. Cl2, Br2). Additionally, hydrogen is a gas at room temperature whereas halogens are typically gases or solids.
Hydrogen's chemical properties are unique and do not fit neatly into a specific group on the periodic table. It does not exhibit consistent trends or behaviors like the elements in other families. Additionally, hydrogen can form both positive and negative ions, possessing properties of both metals and nonmetals.
Hydrogen resembles group 7 elements, also known as the halogens, in that it can form diatomic molecules (H₂ and X₂ for halogens like F₂, Cl₂, etc.) and can participate in similar types of chemical reactions. Both hydrogen and halogens are highly reactive, with hydrogen readily forming bonds with various elements. Additionally, hydrogen can gain an electron to achieve a stable electron configuration, similar to how halogens seek to gain an electron to complete their outer shell.
Actinium can react with halogens, oxygen, hydrogen.
These elements are grouped together because they are all halogens, forming a specific group on the periodic table. Halogens share similar chemical properties due to having seven valence electrons, which gives them a tendency to gain one electron to achieve a stable electron configuration. This similarity in reactivity and electron configuration is why fluorine, chlorine, bromine, and iodine are grouped together.
Oxygen, hydrogen, halogens
Halogens family
Yes They do They all form compounds with Hydrogen