Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


To describe an electron completely in an atom four quantum numbers were given

0 0 0

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Electrons in an atom revolve around the nucleus in a circle (ORBIT) of fixed radius and energy. The electron can move only in those orbits for which its angular momentum is = n h / 2π. These orbits are also called stationary orbits,as their energy is fixed and stable.

The stationary states for electron are :  n =1 ,2 ,3,4 ..
These numbers are called principal quantum numbers.
These quantum numbers can tell the size of the orbital and to a large extent the energy of the orbital.

THere are also azimutal quantum number and magnetic orbital quantum numbers defined.

0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts