Tellurium and iodine appear next to each other in the periodic table. Tellurium is in group 16 and iodine is in group 17 because __________.
A) the mass number is larger for iodine.
B) tellurium has one more proton than iodine.
C) iodine has one more proton than tellurium.
D) the mass number is larger for tellurium.
E) Mendeleev identified that this order is the correct one.
Correct Answer:
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