blackbutter1k blackbutter1k

12-10-2018
Biology

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i am a metal in 4, group 7

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Аноним Аноним

12-10-2018

you are rhodium or iridium

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pestiside pestiside

12-10-2018

Iodine, group 7 elements are known as Halogens, the 4th element down in group 7 is I (Iodine)

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