Linked from
The 13 pages that link to Tennessine, each with the reason it gives.
Period 7 elementBroader topic: Its confirmation filled the penultimate position in period 7.
UnhexpentiumCompared with: Unlike unhexpentium, tennessine has been produced and officially named.
UnpenttriumCompared with: Its permanent name replaced the temporary systematic name ununseptium.
UnquadtriumCompared with: It is the highest-numbered halogen and a confirmed element far below 143.