They both increase
the positive ionic radius is smaller than the neutral atomic radius
Ionic radius is greater than atomic radius in a negative ion and less than it in a positive ion.
A metal will tend to lose electrons and hence the atomic radius is higher than the ionic radius.
in the case of non-metals, the anions are formed by the addition of electrons. So the ionic radius is larger than that of the atomic radius
The negative ionic radius is larger than the neutral atomic radius
the positive ionic radius is smaller than the neutral atomic radius
Ionic radius is greater than atomic radius in a negative ion and less than it in a positive ion.
A metal will tend to lose electrons and hence the atomic radius is higher than the ionic radius.
in the case of non-metals, the anions are formed by the addition of electrons. So the ionic radius is larger than that of the atomic radius
The negative ionic radius is larger than the neutral atomic radius
The positive ionic radius is smaller than the neutral atomic radius
The negative ionic radius is larger than the neutral atomic radius
The electrical charge; also the ionic radius is different from the atomic radius.
* Atomic Radius: 0.79Å * Atomic Volume: 14.4cm3/mol * Covalent Radius: 0.32Å * Ionic Radius: 0.012Å * Atomic Radius: 0.79Å * Atomic Volume: 14.4cm3/mol * Covalent Radius: 0.32Å * Ionic Radius: 0.012Å
Your question is incorrect. It should be increases rather than decreases. Well it is the proton number (Z) that increases.
Atomic radius
Yes. There are other measures for ions (ionic radius) and free atoms(atomic radius) and covalent radius. Metallic, ionic and covalent are based on measurements of distances in crystals or covelnt bond lengths, atomic radius is based more on calcuation than observation.