Chemist lectures about the following definition for acids and bases.

The acid-base behavior is analyzed in terms of how electrons are transferred between compounds rather than in terms of how hydrogen ions are transferred.

What is the chemist defining?
the Arrhenius concept of acids and bases
the classical concept of acids and bases
the Lewis concept of acids and bases
the Bronsted-Lowry concept of acids and bases

The correct answer is "the Lewis concept of acids and bases".

idk

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."