A story of how most atoms are on a quest to become “happy” Terms you must include:
Valence Shell
Octet Rule
Charged
Neutral
Protons
Neutrons
Electrons
Atoms
Family

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

the solar system used to have much dust particles option no d

the answer is c i believe

under a microscope, cancer cells may look very different from normal cells. they often have different sizes and some may be larger than normal while others are smaller. cancer cells are often abnormally shaped and the control centre of the cell (the nucleus) may have an abnormal appearance.

i think? ?