They help scientists explain concepts that are difficult to observe.
I believe it would be false
Answer:
Solution is given in the attachments,below.
Electrons that are further away from the nucleus have more energy. As they enter an "excited" state, they jump up orbits.
-- Speed = (distance) / (time to cover the distance) = 840/2.5 = 336 m/s
-- Frequency = (speed) / (wavelength) = 336/0.70 = 480 Hz.
