A neutral atom has the same number of electrons as protons. You can use the atomic number to find the number of electrons in the neutral atom, and start building an electron configuration. The outer electron configuration of an element includes everything except the noble-gas core. For example, the element C has an electron configuration of [He]2s^22p^2 and an outer electron configuration of 2s^22p^2. The inner electron configuration of an element includes only the noble-gas core. The element C has the inner electron configuration of [He]. Classify each statement as true or false

a. Period 3 dements have an inner electron configuration of [Ne].
b. Period 4 elements all have six 4p electrons.
c. Group 8A elements have full outer principal s and p subshells.
d. The highest principal energy level of period 2 elements is 3.
e. The valence electrons of group 6A elements are in the 75 subshell.
f. Period 4 elements have an inner electron configuration of [Kr-].
g. The valence electrons of group 1A elements are in an s subshell.
h. The highest principal energy level of period 3 elements is 3.