Question 17 Review
Which radioisotope is used to determine the age of once-living organisms?
A.
carbon-14
В.
cobalt-60
C.
iodine-131
D.
uranium-238
Subm

output?

explanation:

oxygen, selenium, tellurium, and polonium.

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

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.