The atomic radius of potassium is 220pm.
K has a larger atomic radius than Li. This is because atomic radius generally increases down a group in the periodic table, so potassium (K) being below lithium (Li) in Group 1 will have a larger atomic radius.
Potassium has the largest atomic radius.
The neutral atom of potassium has the largest radius.
K+
Potassium's atomic radius is smaller than rubidium's because potassium has fewer energy levels of electrons.
Look at your periodic table and you will see that K, potassium, must have the largest radius of these choices. You know that, K + and Na + will be small in radius because they have donated an electron to become positively charged cations.
K+ has larger radius
The volume will be 5723 assuming that the balloon's elasticity makes no difference.
Postassium, K, has a larger radius than sodium, Na, because it is in the next period on the table but in the same group as sodium.
The ionic radii of ions can vary based on their charge and coordination number. In the case of K⁺, Na⁺, and the combination of NaK, K⁺ typically has a larger radius than Na⁺ because potassium is located lower in the periodic table and has more electron shells. Therefore, K⁺ has the largest radius among K⁺ and Na⁺. If you meant "NaK" as a compound, it does not have a defined ionic radius like individual ions do.
When there is an anion (negative charge) the radius will be larger because it is more full whereas it will be smaller if it is a positive charge because of less electrons. ex largest to smallest radius (K-,K, K+)
The largest radius among the options provided.