atomic radius of anions
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Re: atomic radius of anions
They aren't in the same row and atomic radius increases as you go down. Br is further down than Na.
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Re: atomic radius of anions
Br- is one whole shell larger than Na, making it's electrons(especially valence electrons) farther apart from the nucleus, thus giving it a larger electron cloud.
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Re: atomic radius of anions
In the periodic table, the atomic radius decreases along a row from left to right, but increases in a group from top to bottom. Br is found further down the periodic table than Na, so the atomic radius is larger for Br, despite it being on the further right side of the periodic table.
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Re: atomic radius of anions
In neutral state, Bromine is smaller than Na due to it's location on the far right of the periodic table. However, Br- is an anion. Anions have bigger ionic radii than their corresponding neutral atoms.
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Re: atomic radius of anions
The general trend of the atomic radius is that it decreases as you go across a period (left to right), and increases from above to below in a group.
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Re: atomic radius of anions
Atomic radius increases as you go down a group, Br- is a whole shell below Na making it a bigger radius.
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Re: atomic radius of anions
The atomic radius increases down a group and generally decreases across a period, so Br- is naturally greater in radius than Na.
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Re: atomic radius of anions
If the two atoms/ions are isoelectronic, then the one with greater proton number is smaller because it means greater effective nuclear charge from the central atom.
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