Question

As an electron in an atom moves from a higher energy state,

A) It emits a photon
B) It absorbs a photon
C) Its mass increases
D) It loses protons

Answer 1

When an electron in an atom moves from a higher energy state, it emits a photon.

Step-by-step explanation:

An electron in an atom moves from a higher energy state. When it transitions to a less excited state or the ground state, it emits a photon. This is because the electron releases the energy it gained when it transitioned to the higher energy state. Therefore, the correct answer is A) It emits a photon.