The charge is +3
A little more information is needed. Rhenium is a transition metal, and as such, can have multiple valence states. If an ionic charge is known, for example, +2, then it can be assumed that the formula for the oxide would be RhO. If percent composition by mass is known, for example, 86.5% rhenium by mass, then math can be done to determine the formula of the oxide, which in this case, would also be RhO.
The subscript of the second ion identifies the oxidation state of the transition metal
A metal is a chemical element not a compound.
When you mix a metal cation with a nonmetal anion, they will form an ionic compound through ionic bonding. The metal cation will donate electrons to the nonmetal anion, resulting in the formation of a stable compound with a neutral charge. This compound will have a crystal lattice structure and exhibit properties different from those of the individual elements.
Determine the charges of the ions involved. Balance the charges to determine the ratio of ions needed in the formula. Use Roman numerals in parentheses to indicate the charge of the transition metal. Crisscross the charges to write the formula with the lowest whole number ratio of ions.
The charge is +3
Examples of multivalent metals are lead, iron, tin, mercury and copper. They will be written using Roman numerals. To be multivalent they have to have a valence level of at least three or higher.
ionic compounds are a metal and a non-metal joined together in a bond
it forms an ionic compound
It is an abundant, multivalent non-metal.
A little more information is needed. Rhenium is a transition metal, and as such, can have multiple valence states. If an ionic charge is known, for example, +2, then it can be assumed that the formula for the oxide would be RhO. If percent composition by mass is known, for example, 86.5% rhenium by mass, then math can be done to determine the formula of the oxide, which in this case, would also be RhO.
Barium hydroxide is an ionic compound because it is composed of a metal (barium) and a non-metal (hydroxide ion). Ionic compounds are formed by the transfer of electrons from the metal to the non-metal.
The binary ionic compound for SrBr2 is strontium bromide. It is formed by the combination of the metal strontium (Sr) and the non-metal bromine (Br), where strontium has a charge of +2 and bromine has a charge of -1.
The ionic compound for beryllium oxide is BeO. Beryllium is a metal with a 2+ charge, and oxygen is a non-metal with a 2- charge. When they combine, they form a stable ionic compound with a 1:1 ratio of beryllium to oxygen ions.
Yes, aluminum carbide is an ionic compound. Aluminum is a metal and forms cations with a charge of +3, while carbon is a non-metal and forms anions with a charge of -4. When they combine, they form an ionic compound with the formula Al4C3.
The oxidation state of a metal is typically indicated numerically in a compound to show the charge on the metal atom. This is important for determining the reactivity and bonding behavior of the metal within the compound.