Mercury's Atomic Number
This page is the CodyCross answer for the clue below from Architectural Styles, Group 1169, Puzzle 3 (The Pantheon).
Question is: Mercury's Atomic Number
and the answer is: EIGHTY
Word Meaning:
EIGHTY — The cardinal number occurring after seventy-nine and before eighty-one, represented in Roman numerals as LXXX and in Arabic numerals as 80.
Definitions from Wiktionary.