79, for the chem. symbol at the heart of the four longest puzzle answers

Question:

Answer:

ATNO

Length:

Similar Crossword Questions:

They're hidden in this puzzle's six longest answers
Sequence found in this puzzle's five longest answers
It's zero in free-fallÂ—and, put another way, a hint to how the four longest puzzle answers were formed
What you might get from the ends of this puzzle's six longest answers
Each of the four longest puzzle answers has two pairs of them
Driveway stuff (and word that's hidden in this puzzle's four longest answers)
Zamboni-prepared surface, and word that can follow the last word of the puzzle's four longest answers
Call hidden in this puzzle's eight longest answers that's apt for May Day?
Spell "bound" by this puzzle's four longest answers
Bar found at the end of this puzzle's seven longest answers
Queen whose name contains three apt words in a row, as does each of this puzzle's four longest answers
Secret retreat hidden in this puzzle's nine longest answers
Right now, as hidden in this puzzle's longest answers
Popular version of a design principle acronym spelled out by the starts of this puzzle's four longest answers
Bird hiding in the four longest puzzle answers
Newsstand buy, for shortÂ—one begins each of the four longest puzzle answers (and also ends the last one)
A good one follows the starts of the four longest puzzle answers
Commerce minder found in eight of this puzzle's longest answers
Word hidden in this puzzle's longest answers
The eight longest answers in this puzzle each have 13 unique ones
Tampa Bay team playing in this puzzle's longest answers?
Instantly ... or how this puzzle's other three longest answers came about?
Character who, in an 8/15/1939 Hollywood premiere, speaks the first words of this puzzle's five other longest answers
Phrase with synonyms starting this puzzle's eight longest Across answers
Houses with sharply angled roofs, and what this puzzle's four longest answers literally have in common