Beans do have some molybdenum, but only around 125 mcg per cup. To get 500 mcg a day from beans means eating 4 cups per day. For 1,000 mcg it means eating 8 cups a day. Most people usually mix beans with other things, and only eat half a cup or a cup a day at most.

I told a friend that he should take at least 3 grams a day of vitamin C to help fight a sinus infection he has. He said that he eats oranges. I told him that to get 3 grams a day of vitamin C from oranges means eating 60 of them!