+2
The most common oxidation state of -2 would be Oxygen.
Group 16 on the periodic table has elements that form a -2 charge when they bond ionically with metals. This group contains the very common elements oxygen and sulfur. They are usually referred to simply as group 16, group 6A, the "oxygen group," or by their old-fashioned name, the chalcogens.
2(IIA) Because The elements in Group 2 (IIA) are metals with a +2 oxidation state. Thus one atom of a Group 2 metal can combine with 2 atoms of chlorine (oxidation state = -1)
It is determined from known oxidation states of other elements.
To calculate the oxidation state of fluorine in O2F2, first draw a diagram of the molecule: F-O-O-F Determine the most electronegative atom(s), which are fluorines -- the most electronegative atom there is. Being in the group 7A, a fluoride ion would gain an electron to a -1 charge, so each has an oxidation number of -1. The oxygens, therefore, have an oxidation number of +1 each.
Elements in group 2 mostly takes the oxidation number +II.
The most common oxidation state of -2 would be Oxygen.
Boron
Generally third A group elements in the periodic table exhibit +3 oxidation state but Boron exhibit negative oxidation state also . The stable oxidation state of Tl is +1. It exhibit +3 also but +1 is more stable than +3. RGUKT IIIT NUZVID N091528
Group 1 elements are the most electropositive in nature and have only 1 valence electron. So, they always show the oxidation state of +1.
Group 16 on the periodic table has elements that form a -2 charge when they bond ionically with metals. This group contains the very common elements oxygen and sulfur. They are usually referred to simply as group 16, group 6A, the "oxygen group," or by their old-fashioned name, the chalcogens.
all the pure elements have zero oxidation state.....
OXYGEN because it has only one oxidation state of -2, all the other elements in the group have multiple oxidation states.
Selenium's most common oxidation state is -2, as it is both a non metal, and is located in the periodic table in the same group as O and S.
fluorine
all the pure elements have zero oxidation state.....
13.atoms with Oxidation state of -3 fall in group 13 . Cha cha!