Which of the compounds below have bonds that are predominantly ionic?()
A: KCl
B: CF4
C: NH3
D: both A and B
E: both B and C
A: KCl
B: CF4
C: NH3
D: both A and B
E: both B and C
举一反三
- Among the following substances, which have both ionic and covalent<br/>bonds ( ) A: KCl B: CO C: Na2SO4 D: NH4+
- Among the following particles, which contains both ionic and covalent bonds is ( ) A: Ca(OH)2 B: H2O2 C: Na2O D: MgCl2
- Of the compounds below, __________ has the smallest ionic separation. A: K2S B: RbCl C: SrBr2 D: KF E: RbF
- IT can be inferred from the passage that Europa and Antarctica have in common which of the following（） A: Both appear to have a surface with many craters B: Both may have water beneath a thin,hard surface C: Both have an ice can that is melting rapidly D: Both have areas encased by a rocky exterior
- It can be inferred from the passage that Europa and Antarctica<br/>have in common which of the following? ___ A: Both appear to have a surface with many craters. B: Both may have water beneath a thin, hard surface. C: Both have an ice can that is melting rapidly. D: Both have areas encased by a rocky exterior.