A lot of new lifters complain about a lack of flexibility in their wrists and the resultant pain. They will have wrist pain with the wide grip in the Snatch. Racking the weight at the shoulders can be difficult during the clean. Front squats are almost impossible, especially for more than one or two reps. What can be done about this?
Prior to beginning a workout, it would be a good idea to rotate the wrists in all directions. It will only take a minute or two. Then, warm up with a stick for a couple sets before using the empty bar. For the clean and jerk, hold the empty bar at the shoulders for a short time, with the elbows pointing straight ahead. That will stretch the wrists and get them ready. If you have trouble racking the bar at the shoulders for the clean, try to release your grip on the bar so it lands on the fingertips at the shoulders.
Front squats should always be done for low reps. Sets of five would be plenty. Same as in the clean, try to squat with the elbows up and pointing ahead with the bar resting on the fingertips. This will make a big difference.
Believe it or not, your wrists will get used to all this. Give it time. An elastic bandage wrapped around the wrists will make them more comfortable, but it cuts down on your flexibility. It might be a good idea to use them only if you have to.