Sunday express �1000 crossword

[Diamond Life]

33 a colourless alkene. Thanks just in case.

[Prudentia]

ethylene

[Diamond Life]

Thanks Prudentia

[gen2]

But Diamond Life you should be aware that that is not the only alkene that is colourless. The alkenes form a whole series of compounds, and as far as I am aware, they are ALL colourless.

eg. Ethene, acetylene, butene, propene would all answer your question.

I rather suspect that you have been economical with the facts. Surely there was more to the crossword clue than you have posted? Almost certainly there would have been some indication of the number of letters expected in the answer. Aditionally, your own efforts would more than likely have given some of the letters in particular positions in the expected answer.

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