Phoebe asked in 科學化學 · 1 decade ago

METAL REACTIONS

Sodium metal is stored under oil. When it is taken out and cut in air, it is shiny but it very quickly goes dull.

Discuss why sodium quickly goes dull when cut in air and how this relates to the fact that sodium is rarely used in its pure form.

In your answer:

• describe the atomic structure of sodium

• explain why sodium is stored in oil

• name the substance in air that the sodium reacts with

• write a word and balanced chemical equation to represent the reaction that occurs.

我不是要翻譯!!

請不要幫我把題目翻譯成中文...

請用英文回答問題~Thank you^^

Update:

<<Electronic configuration: 1s2 2s2 2p6 3s1 >>

這是什麼意思阿??

1 Answer

Rating
  • 小白
    Lv 7
    1 decade ago
    Favorite Answer

    Atomic structure of sodium

    圖片參考:http://imgcld.yimg.com/8/n/AF03901095/o/1510081806...

    Number of Energy Levels: 3 First Energy Level: 2

    Second Energy Level: 8

    Third Energy Level: 1

    Electronic configuration: 1s2 2s2 2p6 3s1

    Sodium is an active metal. It tends to lose its 3s1 electron by reacting with moisture and oxygen. Therefore this metal must be stored in oil to prevent contacting air or moisture.

    When in air, sodium reacts with oxygen and forms sodium oxide (Na2O).

    Oxidation reaction of sodium

    4Na + O2 --> 2Na2O

    Reference:

    http://www.chemicalelements.com/elements/na.html#s...

     

     

    2010-08-19 16:27:55 補充:

    Electronic configuration: 1s2 2s2 2p6 3s1

    鈉的電子組態,1s有2個電子,2s有2個電子,2p有6個電子,3s有1個電子。

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