chemistry-urgent (20points)

The electronic diagram of sodium sulphite is shown below.

圖片參考：http://ndc.hkcampus.net/~ndc-007/Na2CO3_ed.jpg
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The colours of the electrons of Na, S and O atoms are green, red and blue respectively.

Note that the S atom does not follow the octet rule, and there are 10 electrons in the outermost shell of the S atom of the sulphite ion.
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