Enter a clue or pattern or both:
The Clue
Atoms with the same number of protons (8 letter answer)
The Answer
ISOTOPES
Tags
Notes
The answer ISOTOPES is rarely seen, appearing only about once every 1800 puzzles.
Related Clues
Chemist's relatives?
Carbon 14 and others
Deuterium and tritium, to hydrogen
Protium and tritium, e.g.
Some are radioactive
Carbon 14 and uranium 235
Springfield's minor-league team on "The Simpsons"
Definition
ISOTOPE as a noun:
1. one of two or more atoms with the same atomic number but with different numbers of neutrons