Home > Chemistry > Periodic Trends in Ionic Size

Why do ionic radius increase?

Answer 1

In what context...?

Anionic radius should certainly be larger than the radius of the parent atom. Cationic radius should certainly be SMALLER than that of the parent atom. Why? Because, reasonably, both atomic and ionic radii are DEFINED by the radius of the valence electron, And of course a redox process adds or removes an electron from an atom, and thus the ionic radius will change markedly with respect to the radius of the parent atom.

And so as scientists we should look at the data....

The answer is in #"picometers"#, #"1 pm"-=1xx10^-12*m#.

Do the given data support what we have argued?

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Olivia Anton

Ionic radius increases as you move down a group in the periodic table because the outermost electron shell is farther from the nucleus, resulting in increased shielding effects and decreased attraction between the nucleus and the outer electrons.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.