Free help with homework

Why join Brainly?

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


Follow the octet rule which states that a element wants 8 valance shell electrons. If there are valance shell electron alone then it a lone pair.
hope this helps u!!!!!!
2 5 2
Start with THE NO. OF VALENCE ELECTRON OF AN ATOM  Count how many more electrons are needed to fill the valence shell.  This will be the typical number of bonds.  Subtract the number of electrons in the bonds from the total number in a full valence shell and this is the number of unpaired electrons.                                                                                          example is water. 

Oxygen has 6 valence electrons. Once it uses 2 electrons to form covalent bonds with 2 hydrogen atoms, it has 4 electrons left. Hence, it has 2 lone pairs of electrons.
hope this will help u.

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