The ionization potential of hydrogen atom is 13.6 eV, and λH and λD denote longest wavelengths in Balmer spectrum of hydrogen and deuterium atoms, respectively. Ignoring the fine and hyperfine structures, the percentage difference \(y=\frac{\lambda_H-\lambda_D}{\lambda_H} \times 100 \), is closest to
1
1.0003%
2
-0.03%
3
0.03%
4
-1.0003%