• 2022-06-06
    Which of the following is NOT an example of primary bonding?
    A: Van der Waals
    B: ionic
    C: covalent
    D: metallic
  • A

    内容

    • 0

      Which of the following is an example of primary evidence?

    • 1

      Among the following substances, which have both ionic and covalent<br/>bonds ( ) A: KCl B: CO C: Na2SO4 D: NH4+

    • 2

      下面的说法错误的是? A: 任何适于van der Waals 公式的气体都能满足van der Waals对比状态方程式 B: van der Waals 对比状态方程式不含有因物质而异的常数,但与物质的量有关 C: 适于van der Waals 公式的气体,在相同的对比温度和对比压力之下,有相同的对比容积 D: 对比状态原理在工程上有广泛应用

    • 3

      Among the following particles, which contains both ionic and covalent bonds is ( ) A: Ca(OH)2 B: H2O2 C: Na2O D: MgCl2

    • 4

      The primary structure of protein is primarily maintained by A: peptide bond B: hydrogen bond C: ionic bond D: hydrophobic bond E: covalent bond