1 / 5

化學式的寫法:

化學式的寫法:. 陽(正)離子在前面,陰(負)離子在後面。 陽離子以 表示,陰離子以 表示。 在依正負離子總電量相等,決定各離子的個數。 例如: (1)Na + 和 Cl - 可形成 NaCl 。 (2)Mg 2+ 和 Cl - 可形成 MgCl 2 。 (3)Al 3+ 和 Cl - 可形成 AlCl 3 。 (4)Mg 2+ 和 O 2- 可形成 MgO 。 (5)Al 3+ 和 O 2- 可形成 Al 2 O 3 。. Na +. Cl -. NaCl. Mg 2+. O 2-. MgO. Na +. O 2-. Mg 2+. Na +.

ryan-franks
Download Presentation

化學式的寫法:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. 化學式的寫法: • 陽(正)離子在前面,陰(負)離子在後面。 • 陽離子以 表示,陰離子以 表示。 • 在依正負離子總電量相等,決定各離子的個數。 • 例如:(1)Na+和Cl-可形成NaCl。 (2)Mg2+和Cl-可形成MgCl2。 (3)Al3+和Cl-可形成AlCl3。 (4)Mg2+和O2-可形成MgO。 (5)Al3+和O2-可形成Al2O3。

  2. Na+ Cl- NaCl Mg2+ O2- MgO

  3. Na+ O2- Mg2+ Na+ Cl- Cl- Na2O MgCl2

  4. Cl- Cl- Cl- Al3+ AlCl3

  5. Al3+ Al3+ O2- O2- O2- Al2O3

More Related