Atomic Structure Question 406

Question: The energy of electron in first energy level is - 21.79×1012 erg per atom. The energy of electron in second energy level is:

Options:

A) 54.47×1012ergatom1

B) 5.447×1012ergatom1

C) 0.5447×1012ergatom1

D) 0.05447×1012ergatom1

Show Answer

Answer:

Correct Answer: B

Solution:

  • If we assume the atom to be hydrogen like, energy of nth energy level En=E1E2 where E1 is energy of first energy level E2=E122=E14=21.79×10124

=5.447×1012 erg per atom.



NCERT Chapter Video Solution

Dual Pane