electronegativity chart

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Jasmine Botello 2F
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electronegativity chart

Postby Jasmine Botello 2F » Tue Nov 07, 2017 4:08 pm

Is it necessary to know or memorize the electronegativity chart in the book? It is figure 3.12 in the book. Will we be asked questions that require these specific values? or should we just know the trend?

Thank You!

nickjadidian 1A
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Re: electronegativity chart

Postby nickjadidian 1A » Tue Nov 07, 2017 4:39 pm

In general, I wouldn't memorize these kinds of values. The best way of thinking about electronegativity is that it is closely related with ionization energy and electron affinity (in fact, it's derived from these two values). Just consider how the trends work. Electron affinity and Ionization energy both increase across a period/row, and decrease down a column/family. Electronegativity will generally follow this trend. A rule of thumb is that F is the most electronegative element: those near it also have a relatively high electronegativity.

Sammy Thatipelli 1B
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Re: electronegativity chart

Postby Sammy Thatipelli 1B » Tue Nov 07, 2017 5:52 pm

another way that I remember it is that electronegative elements like in group 17 really want to have additional electrons to reach the noble gas configuration (reach the noble gas state). this is the opposite of group 1 because they form cations and want to lose electrons to reach the noble gas configuration

welcometochillis
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Re: electronegativity chart

Postby welcometochillis » Sun Nov 12, 2017 4:32 pm

An easy way to remember the general trend is that electronegativity increases across the period tables (left to right) and decreases as you go down.

Diane Bui 2J
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Re: electronegativity chart

Postby Diane Bui 2J » Sun Nov 12, 2017 4:44 pm

I also find it easy to remember that Flourine is the most electronegative atom, so as you get closer to Flourine, the atom becomes more electronegative.

Abigail Urbina 1K
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Re: electronegativity chart

Postby Abigail Urbina 1K » Sun Nov 12, 2017 4:48 pm

The definition of electronegativity itself is "the electron-pulling power of an atom." The best way to think of it conceptually without having to memorize any numbers is to think of it in terms of electron affinity. The trend for electron affinity increases as you go from left to right across a period from the periodic table - of course, which the exceptions of particular elements that we have learned. Similarly, electron affinity decreases as you go down a group. Therefore, you can think of the trends of electronegativity as corresponding with the trends of electron affinity.

SamanthaGrohe1B
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Re: electronegativity chart

Postby SamanthaGrohe1B » Sun May 20, 2018 11:12 pm

Memorization of the electronegativity chart is not the most useful way to know the electronegativities. I would recommend remembering the basic trends and possible exception by knowing the number of valence electrons of each atom at ground state due to their electron configurations.

vivianndo_1L
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Re: electronegativity chart

Postby vivianndo_1L » Fri May 25, 2018 8:46 am

You can also remember "FONCL" from class as it describes the trend in electronegativity--as you go from F to L, electronegativity decreases.

juliaschreib1A
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Re: electronegativity chart

Postby juliaschreib1A » Sun Jun 10, 2018 11:53 pm

It is definitely not necessary to memorize these numbers. It is more important to know the trends of electronegativity. A trick I use for memorizing trends is to know the element with the highest electronegativity and a line pointing in that direction is the general trend.

salvadoralvizo1J
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Re: electronegativity chart

Postby salvadoralvizo1J » Sun Jun 10, 2018 11:55 pm

No, he will probably provide us with one on the exam if we even need one. It's important to know the general trend is anything and that Fl is the most electronegative atom.

Yitzchak Jacobson 1F
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Re: electronegativity chart

Postby Yitzchak Jacobson 1F » Mon Jun 11, 2018 12:48 am

I don't believe its necessary to memorize it, but its best to know that it increases from left to right.
Hope this helps :)

Nicole Jakiel 4F
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Joined: Fri Sep 28, 2018 12:28 am

Re: electronegativity chart

Postby Nicole Jakiel 4F » Sun Oct 28, 2018 6:36 pm

The general trend that you need to remember is that electronegativity increases as you go up the periodic table and to the right! I believe this should be enough in order to figure out which elements are more electronegative than others.


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