D. As more electrons are added to an element, the number of electron orbitals being filled increases
Answer:
5 million million atoms can fit at the end of a needle
Answer: the protons n neutrons
Explanation:
D
Isotopes have the same number of protons so they both have 17 and a different amount of neutrons which is why the mass number is different
Answer:
B. mass, volume
Explanation:
Density refers to a physical property that is measured using a ratio of mass divided by volume so that two objects of the same size can still have very different density.
