Periodic Trends: Diagonal Relationships

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Shirley Liu 2I
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Joined: Fri Sep 28, 2018 12:16 am

Periodic Trends: Diagonal Relationships

Postby Shirley Liu 2I » Sun Nov 04, 2018 11:12 pm

For elements with diagonal relationships, how would you compare their ionization energies and electron affinities? For example, would oxygen or chlorine have a higher ionization? Oxygen has a smaller shell number but chlorine is further to the right of the periodic table and thus has a higher effective nuclear charge which would attract electrons more strongly.

Michelle Fu 1H
Posts: 35
Joined: Fri Sep 28, 2018 12:19 am

Re: Periodic Trends: Diagonal Relationships

Postby Michelle Fu 1H » Sun Nov 04, 2018 11:50 pm

They are similar because although the element that is further down the group has more electrons it also has a higher effective charge which basically makes it "equal" in electron affinity and ionization energy with the other element which although has less electrons also has a smaller effective charge.

Sheridan Slaterbeck 1J
Posts: 62
Joined: Fri Sep 28, 2018 12:27 am

Re: Periodic Trends: Diagonal Relationships

Postby Sheridan Slaterbeck 1J » Sun Nov 04, 2018 11:56 pm

In a review session today they said they would not ask us this without giving us values for which one has a higher ionization.

Andrew Bennecke
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

Re: Periodic Trends: Diagonal Relationships

Postby Andrew Bennecke » Mon Nov 12, 2018 10:10 am

Also, the idea of Diagonal Relationships is relevant to the metalloids and other atoms with similar physical properties.


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