Locate Antimony, Sb, on a periodic table. Antimony has two common isotopes, Sb-120 and Sb-124. What are the percent abundances of each isotope?

Explanation:

Antimony Sb, is located on the 5th group on the periodic table with other elements such as Nitrogen, phosphorus, arsenic, bismuth and moscovium.

Its electronic configuration is:

             2, 8, 18, 18, 5

The percent abundances of each isotope is;

 Sb - 121  = 57.21%

 Sb  - 123  =  42.79%

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.