The bond valence model is an evolution of Pauling's electrostatic valence principle first enunciated in 1929. Recent improvements in crystal structure determination have allowed the model to become more quantitative. Unlike other models of inorganic chemical bonding, the bond valence model is simpl[...]
Suggests date activities that serious couples can use to gauge their marriage suitability, making recommendations on a range of marriage preparation themes that enable dating couples to learn about their differences and potential marital roles. Original.[...]