Register to reply

Atoms and dipolar substances

by Prashasti
Tags: atoms, dipolar, substances
Share this thread:
Prashasti
#1
Apr20-14, 12:59 AM
Prashasti's Avatar
P: 24
Can an atom be considered as an example of a dipole? It has positive charge in the nucleus and negative charge around it. So, can't it act as a dipole?
Phys.Org News Partner Physics news on Phys.org
Technique simplifies the creation of high-tech crystals
Working group explores the 'frustration' of spin glasses
New analysis of oxide glass structures could guide the forecasting of melt formation in planetary interiors
M Quack
#2
Apr20-14, 05:04 AM
P: 660
No. In the absence of an external electric field an isolated atom does not carry any electric dipole moment. The electron has equal probability of being on one side of the nucleus or the other.

The absence of an electric dipole moment is one of the shortcomings of the Bohr model of the hydrogen atom.
http://en.wikipedia.org/wiki/Bohr_model

On the other hand, an external electric field can shift the electron distribution and thus induce a small electric dipole.
Vanadium 50
#3
Apr20-14, 06:31 AM
Mentor
Vanadium 50's Avatar
P: 16,106
Please continue the discussion here: http://www.physicsforums.com/showthread.php?t=749603


Register to reply

Related Discussions
Chemistry: Polar or non-polar? Dipolar moment? Biology, Chemistry & Other Homework 4
Chem help pleaseeee : How many Fe atoms and how many moles of Fe atoms are in 400.0 g Biology, Chemistry & Other Homework 6
Time evolution of a rotating dipolar magnetic field Advanced Physics Homework 6
What right do states have to ban certain substances? Current Events 12
Name these substances Introductory Physics Homework 2