Which statements are true concerning elements in the same group of the periodic table? Select all that apply. A) They have similar periodic properties.
B) They are all metals or nonmetals, but not both.
C) They have the same number of shells of electrons
D) They have the same number of inner core electrons.
E)They have the same outer shell (valence) electron configuration

Elaborate on the reason(s) that matter is said to move even as in a solid state. select one: a. the particles are bound through intermolecular forces but are able to move past each other with relative freedom. b. the particles have sufficient energy to become an ionized gas and are in the most common state of matter in the universe. c. the particles are not able to move out of their positions relative to one another, but do have small vibrational movements. d. the particles are not bound to one another, move quickly, have a low density, and are able to spread apart from one another if unconstrained.