Problem 39E
Calculate the frequency of each wavelength of electromagnetic radiation:
a. 632.8 nm (wavelength of red light from helium-neon laser)
b. 503 nm (wavelength of maximum solar radiation)
c. 0.052 nm (a wavelength contained in medical X-rays)
SoutionStep 1a)Li has larger first ionization energy than NaExplanationFirst ionization energy is the energy required to remove the outermost, or highest energy,electron from a neutral atom in the gas phase.As we move down a column in the periodictable , first ionization energy decreases.This is because of the increase in size of the atoms asa result of which ,the effective nuclear pull experienced by the outermost electrondecreases.Thus the outermost electrons can be removed easily.Li comes above Na in the first group and hence has higher first ionization energy
