(1)Ca(OH)
2是离子化合物,由由Ca
2+离子和OH
-离子构成,Ca(OH)
2的电子式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d058ccbf6c81800aa53a50bfb23533fa838b47a0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,
H
2O是共价化合物,氧原子分别与两个氢原子通过一对共用电子对结合,H
2O电子式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/cdbf6c81800a19d801dc5db430fa828ba71e46a0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,
故答案为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/d058ccbf6c81800aa53a50bfb23533fa838b47a0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
;
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/cdbf6c81800a19d801dc5db430fa828ba71e46a0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
;
(2)NH
3是共价化合物,氮原子分别与3个氢原子通过一对共用电子对结合,NH
3电子式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/77094b36acaf2edd2b3490588e1001e9380193be?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,
MgO是离子化合物,由Mg
2+离子和O
2-离子构成,MgO的电子式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/4a36acaf2edda3ccf521619102e93901203f92be?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
;
故答案为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/77094b36acaf2edd2b3490588e1001e9380193be?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
;
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/4a36acaf2edda3ccf521619102e93901203f92be?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
;
(3)Na
2O
2是离子化合物,由Na
+离子和O
2-离子构成,Na
2O
2的电子式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a2cc7cd98d1001e9b5f9cdbebb0e7bec55e797be?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,
CCl
4是共价化合物,碳原子分别与4个氯原子通过一对共用电子对结合,CCl
4电子式为
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/fc1f4134970a304ee2fd794bd2c8a786c8175ca0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
,
故答案为:
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/a2cc7cd98d1001e9b5f9cdbebb0e7bec55e797be?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
;
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/fc1f4134970a304ee2fd794bd2c8a786c8175ca0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
.