(Polar molecules, Non-polar molecules, etc.)
7 posts • Page 1 of 1
Lone pairs are only attracted by one nucleus, compared to a bonding pair which is attracted to two. This makes it so that lone pairs have a greater negative charge and thus more repulsion, which accounts for the extra "volume."
I believe lone pairs take up more space than a bonded pair of electrons because a bonded pair has two different nuclei attracting it, making the bond smaller. On the other hand, lone pairs are only being attracted to one nucleus, therefore attracted less strongly, allowing the density of the electrons to expand. Hope that helps!
First, we should know that lone pair makes an atom bigger, because electrons repel each other. If one pair of electron forms bonding, that means the electrons are attracted by other electrons, so they would no longer repel each other, making the size smaller. If you apply this idea, you will notice that long-long pair is bigger than long bonding pair than bonding bonding pair!
Brett Lieuallen 2A wrote:I know that lone pairs take up greater volume but could someone explain again why they take up greater volume?
bonded e- only take up the space between the two elements because of its attraction to the nucleus. An unbonded pair of e- are not bound to two nuclei and therefore, have more room to move around with less constraints and attractions
Who is online
Users browsing this forum: No registered users and 1 guest