Question

explain why elements produce their own characteristic colours when they emit photons​

Answer 1

Answer:

Heating an atom excites its electrons and they jump to higher energy levels. When the electrons return to lower energy levels, they emit energy in the form of light. ... Every element has a different number of electrons and a different set of energy levels. Thus, each element emits its own set of colours.

Answer 2

Each element produces a unique bright line spectra because no two elements have the same number of electrons hence when the electron moves from a higher level to a lower level, it produces a unique light frequency.