Crossword Clue:

One of a related set of atoms

AnswerCrossword Clue
ISOTONEOne of a related set of atoms
ISOTOPEOne of an element's closely related atoms
ISOTONEOne of a group of atoms having the same number of neutrons but a different number of protons
TANTEOne related to a "neveu"
STATEOne of a set of 50
HERSOne of a set of towels
STAIROne of a set of steps
ENGOne of a famous set of twins
CRAYONOne of a set of 64, maybe
SHROUDOne of a set of ships' ropes.
PIECEOne of a set, as of silver.
MOLAROne of a dozen in a set of 32
TYREOne of a set of four on a London taxi