During a flame test, a lithium salt produces a characteristic red flame. this red color is produced when electrons in excited lithium atoms 1. are lost by the atoms 2. are gained by the atoms 3. return to lower energy states within the atoms 4. move to higher energy states

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?