In elements, in the free (or) the uncombined state, each atom bears an oxidation number of

Statement The oxidation number of an element in its free or uncombined from is zero. Explanation The oxidation number of a monoatomic cation or anion is equal to its charge.

Which element occurs in free state ?

Write Lewis structure of O_(2)^(-) ion and find out oxidation state of each oxygen atom? What is the average oxidation state of oxygen in this ion?

The oxidation state of O-atom is +2 in

Discuss the general characteristics of Group 15 elements with reference to their electronic configuration, oxidation state, atomic size, ionisation enthalpy and electronegativity.

The element with atomic number 17, can exhibit oxidation state of