Question icon
Grade 11Inorganic Chemistry

Find out the value of electrostatic potential energy of 2 electrons separated by 3.0 angstrom in vacuum.

Profile image of shambhavi mishra
15 Years agoGrade 11
Answers icon

1 Answer

Profile image of ABHISHEK JAIN AskiitiansExpert-IITD
15 Years ago

Dear Shambhavi,

 

since P.E. = Kq1q2\r

charge on electron = 1.6 × 10^ -19

distance b/w two electrons = 3Å = 3 × 10^ -10 meter

coulamb's constant k = 9 × 10^9

put the values in above formula:

P.E. = 9 × 10^9 × 1.6 × 10^-19 × 1.6× 10^-19 ÷ 3 × 10^-10

      = 7.676 × 10^-19 J