What amount of red, green, and blue light is necessary to make black? Explain your reasoning

Well, black's hex code is #000000 or (R,G,B) = (0,0,0). You can think of black as 'the absence of color', so by removing all colors (setting everything to zero), you get black.

Explanation:

you have to study

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).