Dr. lanzilotti wants to create a stimulus that will produce an afterimage of a red heart shape against a white background. he should make the heart and the background
a. ? green; black
b. ? pink; red
c. ? red; green
d. ? blue; white

Which statement about relative potential energy of electrons is correct? a. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 2 s orbital of the second electron shell. b. an electron in the 2 p orbital of the second electron shell has more potential energy than an electron in the 3 p orbital of the third electron shell. c. an electron in the 3 p orbital of the third electron shell has more potential energy than an electron in the 2 p orbital of the second electron shell.