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Which of the following is not poisonous?(a) H2O(b) H2S(c) H2Se(d) H2TeThe question was posed to me during an interview for a job.The query is from P-Block topic in portion P-Block Elements of Chemistry – Class 12

Answer»

Right OPTION is (a) H2O

Easy explanation: The hydride of Oxygen, i.e., H2O is a colourless, odourless liquid while the hydrides of all the other group 16 elements are UNPLEASANT, foul smelling, poisonous gases. H2O has the highest boiling point of 373 K amongst the hydrides of group 16 elements.



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