When an alcohol undergoes Lucas test, the precipitate appears after "5" minutes (approx).How many "alpha" -H atom does this compound have?

Consider the argon atom. For how many electrons does this atom have m_(l) = 1 ?

Which of the following compounds does magnesium precipitate when you test for it?

write the elctron distrubution of oxygen atom .How many valence electrons does it have?

Which of the following aldehydes contains alpha-C atom but does not have any alpha-H atom ?

An alcohol of unknown structure gave a positive Lucas test in about five minutes. When alcohol was heated with concentrated H_(2)SO_(4) an alkene was formed with the formula C_(4)H_(8) . Ozonolysis of this alkene gave a single product, C_(2)H_(4)O . What was the structure of the alcohol ?