Question

The loss of one or more electrons from an atom is called

a. oxidation
c. electrochemistry
b. reduction
d. half-reaction

Answer 1

Loss of an electron is oxidation! 

Answer 2

Answer: a. oxidation

Step-by-step explanation:

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

`X\rightarrow X^(n+)+ne^-`

Electrochemistry is the branch of science which deals with the interconversion of electrical and chemical changes in the systems.

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

`X^(n+)+ne^-\rightarrow X`

Half reaction is a reaction of oxidation or reduction occurring in anodic half or cathodic half of the cell. It could be oxidation or reduction.