邊種氣體是有毒的和溶於水..........?

There are quite a number of gases which can be regarded as toxic gases and they can dissolve in water. However, their toxicity can vary. Some of them are very toxic but some of them may be slighly toxic.
Chlorine, fluorine, hydrogen cyanide, nitric oxide, sulfur dioxide, ammonia and phosgene(介子氣) can all dissolve in water can cause harm to our body.

2007-01-05 11:12:24 補充：
還有"沙林"毒氣, 它都會小量溶於水.

氯氣Chlorine

用在swimming pool 的氟氣是一種有毒氣體, 用來kill 細菌同微生物

你可以在元素表找到