The valence of promethium is +3 and rarely +2.
Promethium is a rare artificial element.
The common oxidation number of manganese are +2, +4 and +7.
The most common oxidation number of magnesium is +2.
It shows some oxidation numbers. Generally it shows +4 oxidation numbers.
Promethium is a solid metal.
the most common oxidation number for oxygen is -2.
Zinc will be 2+ in most cases.
+4 is the most common and the most stable oxidation number
The most common oxidation number is +II. The charge and number for cobalt is +2.
Promethium is a chemical element, atomic number 61.
The oxidation number of uranium can vary, depending on the compound it is in. In its most common form, uranium has an oxidation number of +6.
-1 is most common in chlorides. However chlorine can exhibit oxidation numbers up to +7 in its compounds.