A formula unit is defined as the lowest whole number ratio of the ions present in an ionic compound. The formula unit
of an ionic compound is always an empirical formula.
A certain formula unit of an ionic compound is X3Y2.
Which elements could X and Y be, respectively?
a Al and o
b Ca and N
C Kand S
d Mg and I

As you move from right to left on the periodic table the atomic radius fill in the blank

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins. co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)