What are the trends useful for?

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Aj1156
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Joined: Fri Sep 28, 2018 12:22 am

What are the trends useful for?

Postby Aj1156 » Thu Nov 01, 2018 9:12 pm

When would you use the IE, EN, EA, and AR trends?

ChathuriGunasekera1D
Posts: 78
Joined: Fri Sep 28, 2018 12:17 am

Re: What are the trends useful for?

Postby ChathuriGunasekera1D » Thu Nov 01, 2018 10:06 pm

You could use IE to determine if a bond has more ionic character or covalent character. The greater the difference between IE between the elements, the more ionic character is has. The others have uses too, but I can't think of any right now.

timschaeffer Dis 1J
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Joined: Fri Sep 28, 2018 12:18 am

Re: What are the trends useful for?

Postby timschaeffer Dis 1J » Thu Nov 01, 2018 10:19 pm

The IE and EA trends are also important when making lewis structures because the atom with the lowest ionization energy (or the lowest electron affinity) should be used as the central atom.

Ramsha Dis1B
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Joined: Fri Sep 28, 2018 12:19 am

Re: What are the trends useful for?

Postby Ramsha Dis1B » Thu Nov 01, 2018 11:51 pm

You can use the atomic radius to determine how strong the bonds will be between two atoms that bond together. If there is a bigger radius between two atoms that are bonded together and you compare the strength of the bond to another two bonded together, you can tell which will be stronger, and stay together better.

Lucy Agnew 3E
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Joined: Fri Sep 28, 2018 12:26 am

Re: What are the trends useful for?

Postby Lucy Agnew 3E » Sun Nov 04, 2018 6:59 am

The trends are also useful to predict/determine where an element would be in the periodic table!

Rehan Chinoy 1K
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Re: What are the trends useful for?

Postby Rehan Chinoy 1K » Sun Nov 04, 2018 9:38 am

When drawing a Lewis Structure, the atom with the lowest ionization energy is the central atom. So, for example, hydrogen is never the central atom.

MichaelMoreno2G
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Joined: Fri Sep 28, 2018 12:26 am

Re: What are the trends useful for?

Postby MichaelMoreno2G » Sun Nov 04, 2018 10:58 am

Can someone explain why we use [Ar]

spark99
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Re: What are the trends useful for?

Postby spark99 » Sun Nov 04, 2018 11:25 am

MMoreno3K wrote:Can someone explain why we use [Ar]

You can use Atomic radius to also tell ionization energy. The general trend for atomic radius is that it decreases from left to right across the period, which means the nucleus has a greater pull on the electrons, causing their radius to be smaller. So, ionization energy also increases from left to right because it takes more energy to take an electron away if the nucleus has a greater charge. You can connect these two trends, and can be useful if you have one information and not the other.

Jaqueline Monreal 2L
Posts: 57
Joined: Fri Sep 28, 2018 12:28 am

Re: What are the trends useful for?

Postby Jaqueline Monreal 2L » Sun Nov 04, 2018 12:01 pm

the trends are useful for figuring out which element does in the center when drawing a lewis structure

angelagd3l
Posts: 32
Joined: Fri Sep 28, 2018 12:26 am

Re: What are the trends useful for?

Postby angelagd3l » Sun Nov 04, 2018 12:55 pm

they can help you with figuring out how to draw the lewis structures or electronic configurations

Jennifer Torres 2L
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Joined: Tue Nov 14, 2017 3:01 am

Re: What are the trends useful for?

Postby Jennifer Torres 2L » Tue Nov 06, 2018 10:38 pm

Trends help with determining unknown elements.

Jamie Hsu
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Joined: Fri Sep 28, 2018 12:19 am

Re: What are the trends useful for?

Postby Jamie Hsu » Thu Nov 08, 2018 2:02 pm

Trends are generally helpful as they give us useful information when drawing Lewis Structures. For example, the electronegativity trend can give us a good idea as to what element to put in the center because we want the least electronegative element in the center.

Sophie Roberts 1E
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Joined: Fri Sep 28, 2018 12:17 am

Re: What are the trends useful for?

Postby Sophie Roberts 1E » Fri Nov 09, 2018 7:35 am

All of these trends feed off of each other so it is important to understand all of them. For instance, ionization energy feeds off of atomic radius, as the smaller the radius, the higher the ionization energy, because the pull from the nucleus is greater. Another significant reason to know these trends is for the formation of lewis structures, as the least electronegative atom or the atom with the lowest IE will be the center atom; and the atomic radius will also help with the strength of the bonds.


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