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Periodic Trends

Posted: Mon Oct 29, 2018 9:14 pm
by Briana Perez 3A
Does anyone have an easy way to remember all the periodic trends that occur?
Please share if so!
Thanks

Re: Periodic Trends

Posted: Mon Oct 29, 2018 10:02 pm
by Iris Bai 2K
All size ones generally increase to the bottom left, and all reactivity ones generally increase to the top right, but understanding the reasoning makes it a lot easier.

Re: Periodic Trends

Posted: Thu Nov 01, 2018 5:12 pm
by Mallory_Podosin_1H
For Ionization energy, electron affinity, and electronegativity it Decreases Down and increases across
For atomic radius I just remember that its the other way around

Re: Periodic Trends

Posted: Fri Nov 02, 2018 7:34 pm
by 005113695
Ionization energy and electronegativity both increase up and to the right.
Atomic radius increases down and to the left.

Re: Periodic Trends

Posted: Sun Nov 04, 2018 2:05 pm
by ThomascnguyenDis1J
Some exceptions include the ionization energy of Oxygen and Nitrogen. Nitrogen has a lower ionization energy than Oxygen because Nitrogen's half sub shell offers it more stability than Oxygen.

Re: Periodic Trends

Posted: Sun Nov 04, 2018 9:58 pm
by lukezhang2C
For Atomic Radius it increases as it goes down due to the added number of shells to house the electrons

Re: Periodic Trends

Posted: Sun Nov 04, 2018 10:30 pm
by Anjali 4A
I usually draw the periodic trends out, so for ionization energy and electronegative since it increases as you go across, and decreases as you go down, I would draw two arrows across the periodic table - the side with the arrow indicating the higher ionization energy/electronegativity. I would then draw the opposite for atomic radius/ionic radius.

Re: Periodic Trends

Posted: Sun Nov 04, 2018 10:34 pm
by Lydia Luong 4L
For me, for electronegativity, I just remember that Fluorine is the most electronegative element.

Re: Periodic Trends

Posted: Sun Nov 04, 2018 11:01 pm
by Maxwell S 3E
I would try and think about trends, and just begin to understand how something would change in each trend. For example, atomic radius: For the metallic atoms, the have in their standard structure, fewer protons than the gaseous structures. Due to this, there is a higher level of energy pulling into the nucleus with the right side of the table. From there we can say that the radius increases right to left and then increases top-down.

Re: Periodic Trends

Posted: Mon Nov 05, 2018 9:49 am
by Katelyn Phan 2A
Without considering exceptions, I like to think the trend from least to greatest.
For size you have increasing going left and down.
and almost anything else (ionization energy, electronegativity, etc.) is increasing going up and right.

Re: Periodic Trends

Posted: Fri Nov 09, 2018 9:14 am
by Henry Dudley 1G
I think the easiest way to remember electronegativity, ionization energy, electron affinity, and atomic radius is that the first three all increase across a period, but decrease down a group. However, atomic radius is the exact opposite of that meaning if you can remember atomic radius and you can remember the other are opposite of that you know all the trends.