Why NH3 is arranged as a tetrahedron

  • Thread starter primarygun
  • Start date
why NH3 is arranged as a tetrahedron rather than arranged like the earth(N) is surrounded by 3 satellite(H)?



O=C=O

If is +ve, then it is repelled at its position but it will be attracted if it is at the position of .
Why CO2 is still considered as a non-polar molecule?
is exactly above the C
 
primarygun said:
why NH3 is arranged as a tetrahedron rather than arranged like the earth(N) is surrounded by 3 satellite(H)?
Molecular orbitals require that electrons be found in certain places. The "mini solar system" model of the atom (the Bohr model) does not explain covalent bonding.

Are you familiary with VSEPR theory? this may help you:

http://chemlabs.uoregon.edu/GeneralResources/models/vsepr.html


primarygun said:
O=C=O

If is +ve, then it is repelled at its position but it will be attracted if it is at the position of .
Why CO2 is still considered as a non-polar molecule?
is exactly above the C
It is not considered to be non-polar, it is non-polar.

a polar molecule is one in which you find an asymmetric charge distribution that gives rise to dipoles on the molecule. there is no such region of electron density on [itex]CO_2[/itex]
 
Last edited by a moderator:
Thank you.
so the method to find out whether a molecule is non-polar or polar is to draw axis of symmetry on it.
Does this method always work? If not, please tell me what the limitation is.
 

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Hot Threads

Top