Which particles have about the same mass? O A. Neutrons and protons
B. Electrons, neutrons, and protons
O C. Electrons and protons
O D. Electrons and neutrons

Green is technically every other color but green but the other wavelengths of the other colors get absorbed by the object and the wavelength of the color green gets reflected

They cool it down and aluminum cools easily

B.1 - hydrogren-1 can only mean there is 1 neutron. it's obvious there is 1 proton or else it wouldn't be hydrogen, so they wouldn't put a number after it unless they were indicating the number of neutrons