## Electronegativity

melissa_dis4K
Posts: 106
Joined: Fri Sep 28, 2018 12:28 am

### Electronegativity

Between atoms like chloride and oxygen how do you determine which has a higher electronegativity given that electronegativity increases as you go up and across to the right?

Tarika Gujral 1K
Posts: 62
Joined: Fri Sep 28, 2018 12:27 am

### Re: Electronegativity

Electronegativity follows a diagonal trend: increasing towards the upper right: however, period is more important than group. This is because a lower period is associated with fewer energy shells, and thus a higher Zeff. Higher Zeff implies greater electronegativity: because the stronger the nuclear pull, the greater the pull on electrons.