So sánh hiệu ứng cảm ứng (-I) của các nhóm sau: a. –F , -OH , -NH2
b. –O+R2 , -N+R3 , -F , -Cl , -Br , -I
c. -SOR , -NO2 , -SO2R

[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color