A.0 B.10-12 C.10-7 D.10-2
A.正負(fù)離子所帶的電荷數(shù)相等 B.陽(yáng)離子數(shù)少于陰離子數(shù) C.陰陽(yáng)離子數(shù)相等 D.溶于呈中性