Question

What is the correct order of decreasing size of the following ions?

A.) P3- > Cl- > K+ > Ca2+
B.) Ca2+ > K+ > Cl- > P3-
C.) K+ > Cl- > Ca2+ > P3-
D.) K+ > Cl- > P3- > Ca2+
E.) None of these choices is correct.

Answer 1

@nechirwan

Answer 2

Cl Radius 79 pm
P Radius 98 pm
K Radius 243 pm
Ca Radius 194 pm
so K>Ca>P>Cl

Answer 3

E.) None of these choices is correct.

Answer 4

So its E?