Chemistry, 17.06.2021 07:10, elishane864

. 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 ] I
B] III
C] VII
D] 0

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. Element X has a nucleon (mass) number of 19 and a proton (atomic) number of 9. To which group in...