Calculation:
According to Bohr’s model for the hydrogen atom;
ν = RH(1/n12-1/ n22)cm-1
Given,
n1 = 2
n2 = 4
H (Rydberg’s constant) = 109677
Wave number = 109677 ( ¼-1/16)
Hence, Wave number = 20564.44cm-1
Calculation:
According to Bohr’s model for the hydrogen atom;
ν = RH(1/n12-1/ n22)cm-1
Given,
n1 = 2
n2 = 4
H (Rydberg’s constant) = 109677
Wave number = 109677 ( ¼-1/16)
Hence, Wave number = 20564.44cm-1