2.12 Explain how (and why) different atoms emit different wavelengths of light.

How do different atoms emit different wavelengths of light?

When atoms absorb energy, electrons are excited to higher energy levels. When these electrons return to lower energy levels, they release energy in the form of light. The energy difference between these levels corresponds to specific wavelengths of light.

Why do different atoms emit different wavelengths of light?

Different atoms have unique electron configurations and energy levels. These differences mean that the energy gaps between levels vary, leading to the emission of light at different wavelengths. For example, hydrogen has energy levels that correspond to specific wavelengths of light (e.g., the Balmer series), while other atoms, like sodium or mercury, have their own characteristic sets of energy levels and wavelengths.

.

.

.

.