C-04-Q168mediumsingle_mcqRadius of hydrogen atom 0.00000000370.00000000370.0000000037 cm in scientific form:a3.7×10−93.7 \times 10^{-9}3.7×10−9 cmb3.7×10−83.7 \times 10^{-8}3.7×10−8 cmc37×10−1037 \times 10^{-10}37×10−10 cmd0.37×10−80.37 \times 10^{-8}0.37×10−8 cm