Salts of alkaline earth metals are less soluble than salts of alkali metals because? . a. a higher anion charge concentrated on the smaller anions makes it hard to pull apart ionic lattices. b. a higher anion charge concentrated on the smaller anions makes it easier to pull apart ionic lattices. c. a higher cation charge concentrated on the smaller cations makes it hard to pull apart ionic lattices. d. a higher cation charge concentrated on the smaller cations makes it easier to pull apart ionic lattices

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion. what is the frequency f of oscillation?