Suppose that a hypothetical atom gives a red, green, blue and violet line spectrum. Which jump according to figure would give off the red spectral line.
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Which of the following species are expected to give the line spectrum similar to that of hydrogen atom?

Which of the following spectral series in hydrogen atom give spectral line of 4860 Å

Which of the following spectral series in hydrogen atom give spectral line of 4860 overset@A ?

Which of the following figures give the proper relation to fruit, red and shirt?

Give reason Red, blue, and green are called primary colours of light.

Three identical towels of red, blue and green colour are hanging on a clothes line in the sun. What would be the colour of shadows of these towels?

A certain electronic transtion from an excited state to the ground state of the hydrogen atom in one or more steps gives rise to four lines in the ultra violet region of the spectrum how many lines does this transition produce in the infra red region ?