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.
Bathroom sinks often become clogged with bits of soap, hair and other debris, and clearing these clogs in a double sink can be a challenge, but you donât have to call a plumber.You donât need to replace pipes or use harsh chemicals, either.. Repeat plunging for the second drain. Repeat the process for the opposite sink. You may have to repeat the plunging process a couple of times in both sinks before the drain clears. If the water does not drain after plunging each drain three times, you may need to remove the sink trap.