Wikipedia
Search Wikipedia:

Latest topics
May 2018
MonTueWedThuFriSatSun
 123456
78910111213
14151617181920
21222324252627
28293031   

Calendar Calendar

Free Hit Counter

i need help with chem

Go down

i need help with chem

Post  eric2013 on Thu Feb 23, 2012 10:45 am

why does the distance between two nuclei in a covalent bond vary

eric2013

Posts : 1
Join date : 2012-02-23

View user profile

Back to top Go down

Re: i need help with chem

Post  joemark on Mon Aug 05, 2013 1:28 am

Each atom has a different atomic radius, which is defined as the distance from the nucleus to the outermost electrons.

As the number of electrons increase across the rows, the atomic radius becomes smaller because there is a stronger magnetic pull between the nucleus and the electrons.

Since it is the outermost electrons that engage in bonding, the length of the bond depends on electrons in atom A and atom B coming close enough together that their outermost orbitals overlap.

Think of it this way, if you have a basketball and a tennis ball and touch them together, the distance between their centers could be called the covalent bond length. But if you compare basketball/tennis ball to beach ball/basketball "covalent bond", you can see that the larger the atoms, the longer the distance between their centers, and therefore the longer the bond length.


Learn more about Chemical Bond at http://chemistry.tutorvista.com/organic-chemistry/chemical-bonds.html

joemark

Posts : 16
Join date : 2013-06-24
Location : US

View user profile

Back to top Go down

Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum