What is the standard distance between ceiling studs in a modern track home?

Question:And is it the same for wall studs?

Answers:
Ceiling joists are usually part of the roof truss system and would typically be 24" on center. If the home is not trussed, but is built with a stick framed roof, ceiling joists could be 16", 24" or less commonly 19.2" (19 3/8") on center. Depends upon the span and loading requirements.

Wall studs will be either 16" or 24" on center. It is common for exterior walls to be 16" on center and interior walls 24" on center, but both could be either.