Prime Minister Manmohan Singh pledged Sunday that his government will work for a positive outcome at next month's crucial United Nations summit on setting targets for carbon emissions.

VOA: standard.2009.11.08

And what you find out if you do these calculations, is that you have a negative 1 for your formal charge on nitrogen, you have a negative 2 for your formal charge on carbon, and you have a positive 2 for your formal charge on sulfur.

而如果你做了这些计算会发现，氮的形式电荷量为负一，碳的形式电荷量为负二，而硫的形式电荷量为正二。

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