Question

19)
Why are unique atomic spectra produced by different elements?

Answer 1

Unique atomic spectra are produced because each element has a unique set of electron orbits. Electrons emit or absorb specific wavelengths of light when they transition between these orbits, creating a distinctive atomic emission or absorption spectrum for each element.

Step-by-step explanation:

Unique atomic spectra are produced by different elements because each element has its own unique pattern of electron orbits, and no two elements have the exact same set of electron orbits. In other words, the reason for unique atomic spectra lies in the fundamental quantum mechanics governing the behavior of electrons within an atom. When electrons move between different energy levels or orbits, they emit or absorb light at specific wavelengths, leading to a characteristic set of spectral lines known as the atomic emission spectrum. This emission is a result of excited electrons returning to a lower energy state, which corresponds to the specific energies of the electrons in the atom. Similarly, when an atom absorbs light, its electrons are excited to a higher energy state, producing an absorption spectrum. Hence, each element's atomic spectrum serves as a unique fingerprint, allowing scientists to identify elements and their quantities in various samples, from laboratory chemicals to distant stars.

Answer 2

When atoms are excited they emit light of certain wavelengths which correspond to different colors. Each element produces a unique set of spectral lines. ... Since no two elements emit the same spectral lines, elements can be identified by their line spectrum.