Chapter 3, Problem 31E

Gallium arsenide (GaAs) has gained widespread use insemiconductor devices that interconvert light and electricalsignals in fiber-optic communications systems.Galliumconsists of 60.% ${}^{\text{69}}\text{Ga}$ and 40.% ${}^{\text{71}}\text{Ga}$ . Arsenichas only one naturally occurring isotope, ${}^{\text{75}}\text{As}$ . Galliumarsenide is a polymeric material, but its mass spectrumshows fragments with formulas GaAs and ${\text{Ga}}_{\text{2}}{\text{As}}_{\text{2}}$ . Whatwould the distribution of peaks look like for these twofragments?