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**most energetic of these photons**?

This is my workings:

E = h*v

lambda*v = c

2200 A *(10^-10 m / 1 A) = 2.2E-7 m

2900 A *(10^-10 m / 1 A) = 2.9E-7 m

v = (3.0 * 10^8 m/s)/lambda

v = (3.0 * 10^8 m/s)/2.2E-7 m = 1.4E15 s^-1

v = (3.0 * 10^8 m/s)/2.9E-7 m = 1.0E15 s^-1

**E = (6.626*10^-34 J*s)*1.4E15 s^-1 = 9.0E-19 J**Most energetic?

E = (6.626*10^-34 J*s)*1.0E15 s^-1 = 6.9E-19 J

Is this what is being asked?

Thanks.