Question

Calculate the energy of the red light emitted by a neon atom with a wavelength of 680 nm.

1) 3.54 × 10⁻¹⁹ j
2) 9.74 × 10⁻¹⁹ j
3) 4.27 × 10⁻¹⁹ j
4) 2.92 × 10⁻¹⁹ j
5) 1.99 × 10⁻¹⁹ j

Answer 1

The energy of the red light emitted by a neon atom with a wavelength of 680 nm is 2.92 × 10-19 J.

Step-by-step explanation:

To calculate the energy of red light emitted by a neon atom with a wavelength of 680 nm, we can use the formula: Energy = (Planck's constant) x (speed of light) / (wavelength). Planck's constant is approximately 6.626 × 10-34 J·s, and the speed of light is approximately 3.00 × 108 m/s. Plugging in the values, we get:

Energy = (6.626 × 10-34 J·s) x (3.00 × 108 m/s) / (680 × 10-9 m) = 2.92 × 10-19 J

Therefore, the energy of the red light emitted by a neon atom with a wavelength of 680 nm is 2.92 × 10-19 J