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4) An electron in a mercury atom changes from
energy level b to level e. This energy-level
change occurs as the atom.
(1) absorbs a 2.03-eV photon
(2) absorbs a 5.74-eV photon
(3) emits a 2.03-eV photon
(4) emits a 5.74-eV photon

Sagot :

onyebuchinnaji

The energy-level change occurs as the atom is absorbs a 2.03-eV photon.

Energy change of the mercury atom

The energy change of the mercury atom is calculated as follows;

Energy emitted by a photon when it falls from level b to energy level e is calculated as follows;

ΔE = -3.71 eV - (-5.74 eV)

ΔE =  -3.71 eV + 5.74 eV

ΔE = 2.03 eV

When electron jumps from  lower energy level to higher energy level, energy is absorbed, thus, the energy-level change occurs as the atom is absorbs a 2.03-eV photon.

Learn more about energy level here: https://brainly.com/question/14287666

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