Based on their locations on the periodic table, which two elements would you expect to form positive ions with a +1 charge? A. Hydrogen, H
B. Chlorine, CI
C. Fluorine, F
D. Lithium, Li

Hydrogen and Lithium

Explanation:

Just took the test :)

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.

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)