Question

The difference between the atomic radii of Na and K is relatively large.

a) True
b) False

Answer 1

The difference between the atomic radii of Na and K is relatively large.

Step-by-step explanation:

The statement 'The difference between the atomic radii of Na and K is relatively large' is true.

According to Table 4.6.1, the Na ion has a smaller radius than the K ion,which indicates that the Na atom would also have a smaller atomic radius than the K atom. This is because the Na atom has a smaller charge and a lower principal quantum number than the K atom.

The periodic trend of atomic radius shows that as you move across a period from left to right, the atomic radius generally decreases. So because Na and K are in the same period, the difference in their atomic radii would indeed be relatively large.