0
Why is the radius of a negative ion always greater than the radius of a neutral atom?
Wiki User
∙ 13y ago
A positive ion has less electrons in its shell than a neutral atom. As a result of this, there is less repulsive force between the orbiting electrons (less electrons, less force) and they can come closer to the positively charged nucleus (which is attracting them).
You will have an especially large decrease in radius if you remove the last electron from a shell (the electrons are composed into shells, the first one takes 2 electrons, second one 6, the third one 10 and so on).
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What happens to the atomic radius when an electron is gained?
The negative ionic radius is larger than the neutral atomic radius
How does ionic radius differ from atomic radius?
Ionic radius is greater than atomic radius in a negative ion and less than it in a positive ion.
What happens to the atomic radius when an electron is lost?
the positive ionic radius is smaller than the neutral atomic radius
Why are size of cations always smaller and size of anions always bigger than the corresponding atom?
anions always gain extra electrons casing the ionic radius to increase but cations remove electrons causing the ionic radius to decrease .therefore anionic radius is greater than cationic radius
When an atom becomes a cation what happens to it's radius?
The atomic radius of a cation is smaller than that of its original atom. See the related link for an image example of what this may look like.
Why is negative ionic radius larger than a neutral atomic radius?
The additional electron(s) go into the next available orbit, so the anion is always slightly larger than the neutral analog.
What happens to the atomic radius when an electron is gained?
The negative ionic radius is larger than the neutral atomic radius
Why is a negative ionic radius larger than a neutral atomic?
The additional electron(s) go into the next available orbit, so the anion is always slightly larger than the neutral analog.
Is the radius of a regular polygon always greater than the apothem?
yes the radius of a regular polygon is always greater than the apothem
When atoms gains electrons what happens to the atomic radius?
The negative ionic radius is larger than the neutral atomic radius
What has the greater uncertainty the diameter or the radius?
The diameter is always going to be twice the radius. The radius is always going to be half the diameter.
Is it possible to draw a circle of negative radius?
Radii are always positive. No, it is not possible to draw a circle with negative radius.
How does ionic radius differ from atomic radius?
Ionic radius is greater than atomic radius in a negative ion and less than it in a positive ion.
Is the diameter of a circle is always greater than the radius of a circle?
Yes because it is twice the size of the radius.
What occurs to the radius when an atom loses an electron?
The negative ionic radius is larger than the neutral atomic radius
How does the size of a cation compare with the size of the neutral atom from which it is formed?
An ion is an atom that carries a charge because it has more or less electrons than its neutral form. An electron weighs less than 0.06% of a proton and doesn't take up any real space, therefore an ion is not different in size than its neutral atom.
Is the diameter of the circle always greater than the radius of the circle?
No, only if the diameter is bigger than the radius is the radius smaller than the diameter.
