It seems like you're referring to the order of electron affinity (EA) of certain elements. However, the order you've provided seems to be a bit mixed up.

Electron affinity generally increases across a period (from left to right) on the periodic table and decreases down a group (from top to bottom). This is because as you move across a period, the number of protons increases, which means the nucleus has a stronger pull on the electrons. As you move down a group, the number of energy levels increases, which means the outermost electrons are further from the nucleus and are less attracted to it.

Based on these trends, the correct order of electron affinity from highest to lowest should be: Cl O S Se Br I C B Be Li.

Please note that there are exceptions to these trends, and the actual electron affinities can be influenced by other factors as well.

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It seems like you're referring to the order of electron affinity (EA) of certain elements. However, the order you've provided seems to be a bit mixed up.

Electron affinity generally increases across a period (from left to right) on the periodic table and decreases down a group (from top to bottom). This is because as you move across a period, the number of protons increases, which means the nucleus has a stronger pull on the electrons. As you move down a group, the number of energy levels increases, which means the outermost electrons are further from the nucleus and are less attracted to it.

Based on these trends, the correct order of electron affinity from highest to lowest should be: Cl > O > S > Se > Br > I > C > B > Be > Li.

Please note that there are exceptions to these trends, and the actual electron affinities can be influenced by other factors as well.

Knowee AI · Accepted Answer

It seems like you're referring to the order of electron affinity (EA) of certain elements. However, the order you've provided seems to be a bit mixed up.

Electron affinity generally increases across a period (from left to right) on the periodic table and decreases down a group (from top to bottom). This is because as you move across a period, the number of protons increases, which means the nucleus has a stronger pull on the electrons. As you move down a group, the number of energy levels increases, which means the outermost electrons are further from the nucleus and are less attracted to it.

Based on these trends, the correct order of electron affinity from highest to lowest should be: Cl > O > S > Se > Br > I > C > B > Be > Li.

Please note that there are exceptions to these trends, and the actual electron affinities can be influenced by other factors as well.

Correct order of EA is :-O > S > SeBr < Cl < IC > Li > BeB < C > Cl

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