In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[EX Q]: Nuclear envelopes form around the _ new nuclei.
[EX A]: two

[EX Q]: Atoms are most stable when they have _ electrons in their outer electron energy level.
[EX A]: eight

[EX Q]: Ozone is a form of oxygen that occurs naturally, consisting of _ oxygen atoms.
[EX A]:
three