C-03-Q092mediumsingle_mcqThe mass of a proton is approximately:a9.11×10−289.11 \times 10^{-28}9.11×10−28 gb1.67×10−241.67 \times 10^{-24}1.67×10−24 gc1.66×10−221.66 \times 10^{-22}1.66×10−22 gd1.60×10−191.60 \times 10^{-19}1.60×10−19 g