Question

An electron is present at an energy level with an energy of 5.44 x 10−19 J. After a second, the electron is present at an energy level with energy, 2.4 x 10−19 J. What most likely happened during the transition?

A photon of energy 7.84 x 10−19 J was released.
A photon of energy 3.04 x 10−19 J was released.
A photon of energy 7.84 x 10−19 J was absorbed.
A photon of energy 3.04 x 10−19 J was absorbed.

Answer 1

B

Step-by-step explanation:

A photon of energy 3.04 x 10⁻¹⁹ J was released.

Answer 2

A photon of energy 3.04 x 10⁻¹⁹ J was released.

Step-by-step explanation:

• The electron is present at an energy level with an energy of 5.44 x 10⁻¹⁹ J which is higher than that it will be present after a second that has energy (2.4 x 10⁻¹⁹ J).

∵ The electron will move from a level with high energy to one with lower energy.

∴ A photon will be released with an energy equal to the difference between the two levels (3.04 x 10⁻¹⁹ J).

So, the right choice is: A photon of energy 3.04 x 10⁻¹⁹ J was released.