What is the most likely oxidation state of nitrogen?

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 ion having oxidation state of -2.Sodium atom will loose 1 electron and form ion having oxidation state of +1. Thus, the correct answer is Option C.

A. -Apex I just took the quiz Explanation: It is determined from known oxidation states of other elements

Answer is: a. it is determined from known oxidation state of an element within a compound determined. Oxidation state (oxidation number) shows the degree of oxidation of an atom in a chemical compound. For example, chlorate ion (ClO₃⁻) has negative charge.
One oxygen atom in this anion (negatively charged ion) has the oxidation number -2. There are three oxygen atoms in chlorate anion.
x + 3 · (-2) = -1.
x = -1 + 6.
x = +5; the oxidation number of chlorine.
The oxidation state of Cl (chlorine) in chlorate ion is +5.

C.The number of electrons the element needs to lose or gain to have a full valence shell

Answer 6

The number of the valence electrons determines the oxidation state i.e. oxidation number e.g. oxygen  has 6 valence electrons the oxidation number is -2 that its need to fill up an octet structure.

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