Put these atoms in order from most negative overall charge to least negative overall charge.
* Atom Q: 15 protons, 16 electrons
1 Atom P: 7 protons, 10 electrons
* Atom B: 24 protons, 18 electrons
11 Atom X: 104 protons, 102 electrons

convex lenses are thicker at the middle. rays of light that pass through the lens are brought closer together (they converge). a convex lens is a converging lens. when parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.