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Grade: 11

                        

What is the difference between ionic radius and atom radius?

2 years ago

Answers : (1)

Arun
24730 Points
							
Atomic radius is the distance from the atomic nucleus to the outermost stable electron of a neutral atom.In practice, the value is obtained by measuring the diameter of an atom and dividing it in half.
 
The ionic radius is one-half the distance between two gas atoms that are just touching each other. In a neutral atom, the atomic and ionic radius are the same, but many elements exist as anions or cations. If the atom loses its outermost electron (positively charged or cation), the ionic radius is smaller than the atomic radius because the atom loses an electron energy shell. If the atom gains an electron (negatively charged or anion), usually the electron falls into an existing energy shell so the size of the ionic radius and atomic radius are comparable.
 
 
In a neutral atom, the atomic and ionic radius are the same, but many elements exist as anions or cations. If the atom loses its outermost electron (positively charged or cation), the ionic radius is smaller than the atomic radius because the atom loses an electron energy shell
2 years ago
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