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The vertical columns on the periodic table are called groups, how many groups are there on the periodic table?
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What is the wavelength of a 3*10^12 hz infrared wave a 3*10^20m b 1* 10^4m c 3*10^-3m d 1*10^-4 m
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The vertical columns on the periodic table are called groups, how many groups are there on the perio...
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