chemical properties
An element reacts with another element by sharing electrons. The elements keep sharing electrons until both elements have a full outer shell.
Potassium does not react at all with some elements such as helium, but when it reacts, it always forms a positive ion.
Ba looses its two electrons to form Ba 2+ ion and then it reacts with other elements to form compounds.
No. Hydrogen reacts readily with many elements.
Rubidium (Rb)
Any element in column 1 of a wide form periodic table has exactly one valence electron and reacts with other elements.
Elementally, it reacts most commonly with hydrogen and oxygen. But in the forms of ammonia or nitrates, it will react with most elements.
elements and compounds
Xenon reacts directly with fluorine only.
NADH+
These elements are the alkali metals.
Alkaline earth metals