7-sec-butyl and 6-tert-butyl Which one has priority in the nomenclature?

Since it cant be alphabetical because theyre both butyl, do we take into considerstion the position or the prefix?

Explain.

h let me think

you need to stop taking that class

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.