Is Tungsten magnetic? I dropped my boyfriends ring (made of Tungsten) down the place in the doorframe where the door closes, not knowing there was actually a hole there.
Use commas to separate things in a list or series. If you have a series of three or more items, use commas to separate each item. Do not place commas before or after the list or series. Do not use commas when all the items in a series are linked by and, or, or nor.
The short answer is no. Itâs unusual to put a comma before because. You only do it when you need the comma to prevent confusion because your sentence could have two meanings. The Chicago Manual of Style has an excellent entry on this topic in its Q&A section online. It gives the example.