Answer
1.2nm
Work Step by Step
nano (n) = $10^{-9}$
$1.2 \times 10^{-9} = 1.2nm$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.