The Frequency of Electromagnetic Radiation Required to Promote an Electron

Multiple Choice

The frequency of electromagnetic radiation required to promote an electron from n = 2 to n = 4 in a Bohr hydrogen atom is Hz.

A) 6.2 × 10¹⁴
B) 4.1 × 10^{- 19}
C) 8.2 × 10¹⁴
D) 4.1 × 10¹⁹
E) 5.4 × 10^{- 19}