Consider the mg2+, cl-, k+, and se2- ions. the four spheres below represent these four ions, scaled according to ionic size. a) match each ion to its appropriate sphere. b) in terms of size, between which of the spheres would yo find the (i) ca2+ and (ii) s2- ions?

There is a single path for electrons. the current decreases when additional resistors are added. the current will be the same in each resistor. these statements best describe a(n) circuit.

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.

Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?