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The ionic radius of the iodide ion, I- is 206pm. It is one of the largest monatomic anions. The ionic radii of the halogen ions increase down the halogen group.

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Is potassium iodide a poly atomic ion?

No, potassium iodide is a compound composed of the monatomic ion K+ (potassium cation) and the monatomic ion I- (iodide anion). It is not a polyatomic ion.


What has a larger atomic radius Cl ion or Ca ion?

Calcium has the larger atomic radius than chlorine. Calcium has four energy levels, whereas chlorine has three energy levels. The higher the energy level, the farther it is from the atomic nucleus.


How does ionic radius differ from atomic radius?

Ionic radius is the size of an ion after it has gained or lost electrons, leading to a change in the electron configuration and thus its size. Atomic radius refers to the size of an atom, typically measured as the distance from the nucleus to the outermost electron shell. Ionic radius is affected by the change in electron configuration, while atomic radius is more related to the position of the outer electrons in the neutral atom.


What is Ionic radius of potassium?

you should just turn go look it up in a book or something! Really its not that hard!


What is the formula for iodide?

Iodide ion : I-


What atom has higher atomic radius Na or Na plus?

Na atom has a higher atomic radius compared to Na+ ion. This is because Na+ ion has lost an electron, leading to a decrease in electron-electron repulsion and a smaller electron cloud, causing the ion to have a smaller atomic radius than the neutral Na atom.


Which one has the larger radius potassium ion or bromide ion?

The bromide ion has a larger radius than the potassium ion. This is because bromine has more electron shells than potassium, resulting in a larger atomic radius and thus a larger ionic radius for bromide compared to potassium.


What is the name of a iodine ion?

iodine and iron


Is iodide a metal?

No, iodide is an ion formed by the nonmetal iodine.


Which is larger ion chloride ion or oxygen ion?

The chloride ion (Cl-) is larger than the oxygen ion (O2-). This is because the chloride ion has more electrons than the oxygen ion, resulting in a larger atomic radius and hence a larger ionic radius.


When an atom changes into an ion besides the number of electrons what changes?

The electrical charge; also the ionic radius is different from the atomic radius.


What is the formula for ammonium iodide?

The formula for ammonium iodide is NH4I. It is composed of one ammonium ion (NH4+) and one iodide ion (I-).