An atom of hydrogen has an innermost electron orbit with a radius of 5.3 × 10-11 m. What will be the radius of n = 4 orbit?
Answer & explanation
Correct answer: option 3
rn = n2h2ε0/mπe2 or n2r1
r1 = 5.3 × 10-11 m
r4 = (4)2 × 5.3 × 10-11 m
=8.48 × 10-10 m