What is the systematic element name for the element with atomic number 117 before its official naming?
For Z=117: 1 (un), 1 (un), 7 (sept) → ununseptium (before being named Tennessine).
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Nomenclature of Elements with Atomic Number >100