At room temperature, which of the following is typically in a physical state different from that of the other three?

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

i dont know the answe

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.