1 Consider the first atom of each part of the molecule. An atom with higher atomic number has higher priority. (e.g. I > Cl > C > H)  If the first atom of two groups is the same, consider the second atom(s) in the same way as the first. (e.g. -C(CH3)3 > -CH(CH3)2 > -CH2CH3 > -CH3).
1 You can also use a toilet plunger on your bathroom sink. 2  Fill up the sink with water first, the use the plunger vigorously on the drain just as you would a toilet. 3  This will lift and agitate any blockage in the drain. It will smell a bit like vinegar for about a day. 2  You can also use a toilet plunger on your bathroom sink. 3  Fill up the sink with water first, the use the plunger vigorously on the drain just as you would a toilet.
Pour 1/2 cup white vinegar & 1/2 cup baking soda into the drain, plug off drain and let it work for 15-30 minutes, then flush with hot water. The vinegar and soda form a non-caustic reaction that clears the drain but you need to do this when you first notice it getting slow, not when it's completely plugged.f this doesnât succeed, you need a sink plunger. A sink plunger has a smooth bottom surface, as opposed to the extended lip that youâll find on toilet plungers. With 2 or 3 inches of water in the sink to form a seal around the plunger, give the handle a few gentle pushes down and up.