Dissociation energy

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Katie Clark 3B
Posts: 26
Joined: Fri Sep 25, 2015 3:00 am

Dissociation energy

Postby Katie Clark 3B » Fri Oct 30, 2015 9:45 pm

Can someone explain how to determine which bond has a greater dissociation energy? For example, which has a greater dissociation energy, O-H or S-H?

Nathan Cai 1J
Posts: 18
Joined: Fri Sep 25, 2015 3:00 am

Re: Dissociation energy

Postby Nathan Cai 1J » Fri Oct 30, 2015 10:06 pm

O-H will have a higher dissociation energy because it has a higher electronegativity. Thus, oxygen will hold onto the H's e- stronger than sulfur. Furthermore, oxygen has a smaller radius which means less shielding of the nucleus by electrons.

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