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An atom radiates 1.5 x 1019J of energy when an elect...

An atom radiates 1.5 x 1019J of energy when an electron jumps from one energy level to another. What is the wavelength of the emitted radiation? (Planck’s constant =6.6 x 1034Js. Speed of light in air=3 x 108ms1

A.

1.32 x 106m

B.

2.98 x 106m

C.

3.32 x 106m

D.

6.82 x 106m

E.

8.01 x 106m

Correct answer is A

E=λv=hcλλ=hcE=6.6×1034×3×1081.5×1019=1.32×106