What is the wavelength of a photon of light, with a frequency of 5x10-16 Hz?

Question

What is the wavelength of a photon of light, with a frequency of 5x10-16 Hz?

Answer 1

(Nu)V times (Lambda) upsidedown V = C (the speed of light whish is 3x 10 ^8 m/s)

So wavelength is equal to c / frequency so the answer is (3x10^8) / (5x10-16 Hz) and you get 6x10^23

Answer 2

c = wavelength x frequency

"c" is a constant :   3 x 10^8

Therefore:  3 x 10^8  divided by the frequency would give a wavelength of 6 x 10^23  

Answer 3

1.6 nanometers - high end of x-rays