In an electrolytic cell, the electrode that acts as a source of electrons to the solution is called the ; the chemical change that occurs at this electrode is called .

a) anode, oxidation
b) anode, reduction
c) cathode, oxidation
d) cathode, reduction
e) cannot tell unless we know the species being oxidized and reduced.

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table?