In an earlier chapter you calculated the stiffness of the interatomic "spring" (chemical bond) between atoms in a block of lead to be 5 n/m. since in our model each atom is connected to two springs, each half the length of the interatomic bond, the effective "interatomic spring stiffness" for an oscillator is 4*5 n/m = 20 n/m. the mass of one mole of lead is 207 grams (0.207 kilograms). what is the energy, in joules, of one quantum of energy for an atomic oscillator in a block of lead?