《2025年步步高大二轮专题复习化学》

按要求书写下列微粒的电子式：
$(1) H_{3}O^{+} ____________，$$C_{2}^{2 - } ____________，$$O_{2}^{2 - } ____________，$$NH_{4}^{+} ____________，$$N_{2}H_{5}^{+} ____________，$—OH ____________，$OH^{-} ____________。$
(2) HClO ____________，$CCl_{4} ____________，$$CS_{2} ____________，$COS ____________，HCHO ____________，$COCl_{2} ____________，$$N_{2}H_{4} ____________。$
(3) NaH ____________，$NH_{4}H ____________，$NaCN ____________，$NaBH_{4} ____________。$

答案：

(1)$[H:\ddot{O}:H]^+$ $[:C\vdots \vdots C:]^{2-}$
$[H:\underset{H}{\overset{H}{\ddot{N}}}:H]^+$ $\cdot \ddot{O}:H$ $[:\ddot{O}:H]^-$
(2)$H:\ddot{O}:\ddot{Cl}:$ $\underset{Cl}{\overset{Cl}{\underset{\cdot \cdot }{\overset{\cdot \cdot }{Cl:C:Cl}}}}$ $:S\vdots \vdots C\vdots \vdots S:$
$:\ddot{O}:\vdots C:\vdots S:$ $H:\underset{H}{\overset{H}{\ddot{C}}}:H$ $\underset{Cl}{\overset{O}{\underset{\cdot \cdot }{\overset{\cdot \cdot }{Cl:C:Cl}}}}$
$H:\underset{H}{\overset{H}{\ddot{N}}}:\underset{H}{\overset{H}{\ddot{N}}}:H$
(3)$Na^+[:H]^-$ $[H:\underset{H}{\overset{H}{\ddot{N}}}:H]^+[:H]^-$
$Na^+[:C\vdots \vdots N:]^-$ $Na^+[H:\underset{H}{\overset{H}{\ddot{B}}}:H]^-$