Respuesta :
C. The number of electrons the element needs to lose or gain to have a full valence shell
Answer: The correct answer is Option C.
Explanation:
Oxidation state is defined as the number which is given to an atom when it looses or gains electron. It is written as a superscript.
When an atom looses electron, it will attain a positive oxidation state and when an atom gains electron, it will attain a negative oxidation state.
An atom looses or gains electron to attain stability and to fill their valence shell.
For Example:
- Oxygen atom will gain 2 electrons and will form [tex]O^{2-}[/tex] ion having oxidation state of -2.
- Sodium atom will loose 1 electron and form [tex]Na^+[/tex] ion having oxidation state of +1.
Thus, the correct answer is Option C.