3 molecules. 1, A chain of 3 Upper H pairs single bonded across a backbone of 1 Upper H to the left, and Upper O and Upper H to the right. 2, a chain of 2 Upper H pairs single bonded, and an Upper H pair single bonded with Upper O across a backbone of 2 Upper H single bonded. 3, a chain of 3 Upper H pairs single bonded across a backbone of 2 Upper H single bonded with 1 Upper O. List the number of each atom in the formulas above:

H

O

C

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.