How can you tell if an element has been reduced? O A. The number of its electrons has not changed in the reaction
O B. It has fewer electrons in the product than in the reactant
C. It has a positive oxidation state in the product.
D. It has more electrons in the product than in the reactant.

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?