D. layer B is younger than layer G.
Atomic number = 18 (Number of protons)
Mass number = 18 + 20 (Number of protons + neutrons)
Answer:
Atoms start out with the same number of negative charges (electrons), and positive charges (protons). ... Conversely, adding electrons to an atom would result in a negative ion. If you do this enough times, you can make an object positive or negative. Friction is one of the ways to separate charge.
Explanation:
Answer:
3.011×1023 individual carbon dioxide molecules
