Using the ionic radius of O2- and Bat2 and the expressions for FA & Er given below, calculate the following for a pair of O2- and Bat2 ions which just touch each other: (5) (5) (5) Coulomb force, FA Coulomb energy, EA Repulsive force parameter, b Repulsive force, Fr Repulsive energy ER Bond Energy E. . (5) FA= 1|21||zzle2 4 r2 ER=b/r ro2-=0.140 nm [Ba2+=0.136 nm 0=8.85 x 10-12 C/Nm2 q=1.602 x 10-19 C Inm=10-'m Note: This problem uses sign convention in which attractive forces are positive and repulsive forces are negative. Therefore, F=dE/dr