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20-12-2019
Chemistry

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1) Element X has a nucleon (mass) number of 19 and a proton (atomic) number of 9.
To which group in the Periodic Table does it belong?
A) 1 B) 3 C) 7 D) 0

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Аноним Аноним

20-12-2019

Answer:

Halogen group (group 17)

Hope it helps:)

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