Which describes an isotope of lodine? a. It can be divided into smaller particles that reta in all the properties of iodine.
b. It can have the same protons but different mass and neutrons.
c. It does not possess all the properties of a larger quantity of iodine.
d. It has an atomic number of 127

the answer is c

tell me if wrong

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.  

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