Give the symbol and name for these elements a. 1s2 2s2 2p6 3s1
b. 1s2 2s2 2p3
c. 1s2 2s2 2p6 3s2 3p2
d. 1s2 2s2 2p4
e. 1s2 2s2 2p6 3s2 3p6 4s1
f. 1s2 2s2 2p6 3s2 3p6 4s2 3d5

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.