A Periodic Law Based on Atomic Masses Would Necessitate Te

Multiple Choice

A periodic law based on atomic masses would necessitate Te and I changing places in the periodic table.This was not done in the early periodic table because

A) a periodic law based on atomic masses is not valid.
B) it was thought that the atomic masses might be in error.
C) iodine behaves chemically like chlorine and bromine.
D) the tellurium samples could contain a heavy impurity.
E) iodine contains one naturally occurring isotope,whereas tellurium consists of several isotopes.