oxygen and fluorine
Nonmetals typically have negative oxidation numbers when they form compounds. For example, oxygen usually has an oxidation number of -2, while hydrogen typically has an oxidation number of +1. The oxidation number of a nonmetal can vary depending on the compound it is part of.
Metallic aluminium has the oxidation number zero. In compounds in the form of ions, it takes the oxidation number +III.Metallic aluminium has the oxidation number zero. In compounds in the form of ions, it takes the oxidation number +III.
0 in the elemental form and +2 in its compounds
Nitrogen and oxygen are both nonmetals that can form a variety of polyatomic ions and molecules with multiple oxidation states. Nitrogen can form compounds with different oxidation states ranging from -3 to +5, while oxygen can form compounds with oxidation states ranging from -2 to -1.
0 in elemental form +1 in its compounds
Yes, uranium can form covalent compounds. Uranium typically exhibits a wide range of oxidation states and can form covalent bonds with nonmetals such as oxygen, fluorine, and carbon.
0 in the elemental form. +2 and +4 in its compounds
The change in the oxidation number of Zn is 0 in most cases because the oxidation number of zinc in its elemental form is 0. When zinc forms compounds, it typically has an oxidation number of +2. So when Zn is oxidized to form a compound, the oxidation number increases from 0 to +2.
0 in elemental form and +1 in its compounds
0 in the elemental form, +3 in its compounds.
0 in elemental form +3 in its compounds
Nonmetals burning in oxygen form covalent type compounds, as compared to metals which form ionic compounds.