Question

The teal line of the hydrogen emission spectrum has a wavelength of 486.0 nm. A hydrogen emission spectrum has a violet, a blue, a teal, and a red line. Calculate the energy of one photon of this light.

Answer 1

The correct answer to the following question will be "4.08 × 10⁻¹⁹ Joule".

Step-by-step explanation:

Given:

Wavelength, λ = 486.0 nm

As we know,

`E=h\upsilon =(hc)/(\lambda)`

On putting the estimated values, we get

⇒
`=(1241.5 \ ev\ nm)/(486 \ nm)`

⇒
`=2.554 \ ev`

∴ 1 ev = 1.6 × 10⁻¹⁹ J

Now,

Energy,
`E=2.554* 1.6* 10^(-19)`

⇒
`=4.08* 10^(-19) Joule`