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Gaokao Chemistry Practice Question

AIN、GaN属于第三代半导体材料, 二者成键结构与金刚石相似, 晶体中只存在 $\mathrm{N}-\mathrm{Al}$ 键、 N-Ga 键。下列说法错误的是

  1. A.GaN 的熔点高于 $\mathrm{AlN}$
  2. B.晶体中所有化学键均为极性键
  3. C.晶体中所有原子均采取 $\mathrm{sp}^{3}$ 杂化
  4. D.晶体中所有原子的配位数均相同

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