Which element in group 17 is least likely to lose an electron

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

2. how is heavy water different from normal water