Question

Electrons revolve around the nucleus in fixed orbits or shells called energy levels. State how these energy levels are represented.

Answer 1

Understanding the n concept:

• The atom is made up of electrons that revolve around a nucleus.
• Electrons are tiny, negatively charged particles that go around the nucleus in a curved path or orbit.
• They can't move about freely in every direction. Because of their energy levels, their rotation is confined to specific orbits.
• Energy levels are the fixed distances between electrons as well as the dense nucleus of an atom.
• Energy levels are also known as electron shells. An electron can transition from one level of energy to the next.

Explanation of energy levels:

• The energy shells or levels of an atom are depicted in the figure below.
• Here are the first three energy levels. Level 'K' is another name for the first energy level. Level L is the second energy level, level M is the third, and so on.
• The electron from energy level K has the least energy, whereas those from levels further out from the nucleus have more.
• Valence electrons are electrons in the most extreme energy level.
• These valence electrons are responsible for a variety of atom characteristics. These are written as 1, 2, and 3 or K, L, M, N, and so on.