D-number of electrons in the outer energy level.
D) refracted
because , the light changes direction.. causing the penny to look bigger than it is.
Answer:
The answer is 5. Compound
Group 1A(1), the alkali metals, includes lithium, sodium, and potassium. Group 7A(17) the halogens, includes chlorine, bromine, and iodine. hope this helps:)
The nucleus of a atom contains the protons and the neutrons all most all of the atoms mass is weigh by the protons and the neurons.
