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Atom size

Posted: Sun Nov 10, 2019 9:54 pm
by Bao Tram Nguyen
What happens to the size of an atom as the electronegativity increases and decreases? Does it actually effect atom size?

Re: Atom size

Posted: Sun Nov 10, 2019 9:57 pm
by Rachel Yu 1G
I believe it's the other way around, in which atom size affects electronegativity. Atom size decreases across a period because the atomic number of an atom increases, meaning the positive charge of the nucleus pulls in electrons more strongly, leading to a stronger electronegativity. Overall, smaller atomic size means electrons are closer to the nucleus and pulled more strongly, leading to larger electronegativity.

Re: Atom size

Posted: Sun Nov 10, 2019 9:58 pm
by Maya Serota 3G
As you go up a group and across a period to the right, electronegativity increases. If you go down a group and to the left on the periodic table, atom size increases.

Re: Atom size

Posted: Sun Nov 10, 2019 9:59 pm
by AndreiRekesh1I
They're not directly correlated but as electronegativity increases across the periodic table so do the number of protons in the nucleus so atom size goes down, as the protons attract the electrons more tightly. As we go down the periodic table, electronegativity decreases because electrons are further away from the pull of the nucleus and atomic radius goes up.

Re: Atom size

Posted: Sun Nov 10, 2019 10:56 pm
by Snigdha Uppu 1G
Atomic radius increases in the opposite direction from electronegativity.

Re: Atom size

Posted: Sun Nov 10, 2019 11:08 pm
by preyasikumar_2L
Electronegativity is affected by the size of the atom, not the other way around. In fact, they're somewhat inversely proportional - as atom size increases, electronegativity decreases because it is easier for smaller atoms to attract electrons since the nucleus would be much closer to the electron cloud. Also, electronegativity trends and atomic size trends are opposite. Electronegativity increases up a group and left to right on a period, while atomic size increases down a group and right to left on a period.

Re: Atom size

Posted: Sun Nov 10, 2019 11:16 pm
by Lauren Lewis3L
Atomic radii is the opposite of electronegativity. When you move down a group the atomic radii increases and when you move from right to left the radii increases as well.

Re: Atom size

Posted: Sun Nov 10, 2019 11:16 pm
by Eesha Sohail 1D
Since the oxygen atom is actually smaller than the nitrogen, would it be less electronegative than the latter? Meaning, do these two not follow the "general" trend?

Re: Atom size

Posted: Sun Nov 10, 2019 11:17 pm
by Bilal Pandit 1J
Its essentially all determined by how close the electrons are to the actual nucleus.

Re: Atom size

Posted: Sun Nov 10, 2019 11:21 pm
by Matthew ILG 1L
I don't believe that electronegativity and atomic radius are directly related. However, their trends are opposite, with the atomic radius increasing down and to the left and the electronegativity increasing up and to the right. It is a case of correlation without causation I believe.

Re: Atom size

Posted: Mon Nov 11, 2019 12:37 am
by Noah Canio 3C
Typically electronegativity has the "opposite" trend in comparison to that of atomic radius. This is because the trend in the periodic table for electronegativity is increasing from left to right and bottom to top. In contrast, atomic radius increases from right to left and from top to bottom. These traits have contrasting trends since atomic radius increases as each atom has access to higher quantum numbers (n) while electronegativity changes based on effective nuclear charge, as moving right in the periodic table means that elements have higher numbers of protons, which, in turn, makes those atoms more likely to hold on to electrons in a given bonding pair.

Re: Atom size

Posted: Tue Nov 12, 2019 10:23 am
by Mitchell Koss 4G
However, being electronegative does not make an atom small, it is being small that would impact electronegativity

Re: Atom size

Posted: Thu Nov 14, 2019 6:26 pm
by Juana Abana 1G
Atomic radius increases as you move down a group as well as when you move from right to left on a period. It is basically the opposite of electronegativity.

Re: Atom size

Posted: Sun Nov 17, 2019 10:29 pm
by kevinolvera1j
On the periodic table, the further you go down and to the left, the larger the size of the atom. In terms of periods, size decreases from left to right. In terms of groups, size increases as you go down.

Re: Atom size

Posted: Mon Dec 02, 2019 4:25 pm
by PriscillaLi_3G
Electronegativity does not affect the size of an atom.

Re: Atom size

Posted: Mon Dec 02, 2019 4:33 pm
by Mallika Chimpiri 3K
Electronegativity and atomic size have opposite trends.

Re: Atom size

Posted: Thu Dec 05, 2019 11:10 pm
by Kaitlynn Tran 3F
As atoms get larger, they become less electronegative because the electron cloud gets farther away from the nucleus.

Re: Atom size

Posted: Sun Nov 08, 2020 12:54 am
by t_rasul3I
Electronegativity does not directly affect atom size but there is correlation. Typically cations are smaller and they have less electronegativity and anions are larger and they have less electronegativity. Anions are smaller because they have more e- (more electronegativity) and so they have a larger atomic radii.

Re: Atom size

Posted: Sun Nov 08, 2020 2:12 pm
by Joel Meza 2E
As you go up a group and also across a period to the right on the periodic table, the electronegativity increases. Now, if you go down a group and towards the left on the periodic table, the size of the atom increases.

Re: Atom size

Posted: Sun Nov 08, 2020 2:19 pm
by Kyle Dizon 1A
I do not think that the size of an atom is influenced by the electronegativity that it contains, but we do see that it is somewhat the opposite of each other because the periodic table shows a trend that electronegativity gradually increases when going left to right/bottom to top of the table. On the other hand, the trend of the radius is the opposite.

Re: Atom size

Posted: Sun Nov 08, 2020 2:22 pm
by Karen Elrayes 1L
"Electronegativity is the tendency of the atoms of an element to attract electrons when they are chemically combined with another element." So electronegativity deals with electrons from other atoms and not itself which is why it doesn't affect atom size. But as the rest of the posts said it is the opposite trend to atomic radius.

Re: Atom size

Posted: Sun Nov 08, 2020 2:24 pm
by Adalia 3E
Electronegativity does not cause changes in atomic size, nor does atomic size cause changes in electronegativity, but they have similar trends because they were both affected by the attractive forces between the electrons and nucleus.

Re: Atom size

Posted: Sun Nov 08, 2020 8:29 pm
by Mingzi Yang 1H
I don't think the atomic size of an element is directly affected by its electronegativity. In terms of their trends in the periodic table, they have opposite trends.