Hi, I am having troubles with this question. The answer that I got was Te, Sr2+, K, Se, Na+ but it was incorrect.
I know that the radius decreases across the period and increases as you go down the group.
it would be great if you could explain what I did wrong! Thank you
Select the lesser of each of the following pairs of radii:
The covalent radius of Te
The covalent radius of Sr
The ionic radius of Sr2+
The ionic radius of Rb+
The metallic radius of K
The metallic radius of Cs
The covalent radius of Po
The covalent radius of Se
The ionic radius Mg2+
The ionic radius of Na+