Which of the following is a simple definition of reduction?
the loss of electrons
the gain of electrons
an agent that oxidizes something
an agent that reduces something

Gain of electrons

Explanation:

The following are typical characteristics of rdeuction:

1. It involves the removal of oxygen from a specie

2. Addition of Hydrogen to a specie

3. Decrease in oxidation number of an atom

4. Decrease in the number of electronegative atoms surrounding an element in changing from reactants to products.

A reducing agent is one that undergoes oxidation. It is an electron donor.

Oxidising agent undergoes reduction in a reaction. It is an electron acceptor.

answer is B for blood homie ;-)

Explanation:

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."