Question

question 10 (0.16666666 points)
ar has a larger radius than cl
true
false
question 11 (0.166666666 points)
s has a larger radius than its ion, s^-2
true
false

Explanation:

For Question 10: Atomic radius generally decreases across a period. Chlorine (Cl) and Argon (Ar) are in the same period. Cl is a non - metal that forms anions by gaining electrons and Ar is a noble gas. The atomic radius of Ar is smaller than Cl due to effective nuclear charge. For Question 11: When an atom gains electrons to form an anion, the electron - electron repulsion increases and the radius of the anion is larger than the parent atom. So, S²⁻ has a larger radius than S.

Answer:

Question 10: B. False
Question 11: B. False