e.lec.tro.va.lence
n.（名词）Valence characterized by the transfer of electrons from atoms of one element to atoms of another during the formation of an ionic bond between the atoms.电价：在原子间形成离子键的过程中，由电子从一种元素的原子转移到另一种元素的原子所表示的价The number of electric charges lost or gained by an atom in such a transfer.电价数，离子价：在这样的转移中一个原子失去或得到的电荷数
【引伸】
elec.trova.lent
adj.（形容词）
