Question

question 7 (0.166666667 points)
c has more nonmetallic properties than n
true
false
question 8 (0.166666667 points)
ca has a larger radius than k
true
false
question 9 (0.166666667 points)
mg has a larger radius than its ion, mg+2
true
false

Explanation:

• Question 7: Non - metallic character increases across a period. Nitrogen (N) is to the right of carbon (C) in the periodic table, so N has more non - metallic properties.
• Question 8: Atomic radius decreases across a period. Potassium (K) and calcium (Ca) are in the same period, and K is to the left of Ca, so K has a larger radius.
• Question 9: Cations are smaller than their parent atoms. When magnesium forms a $Mg^{2 + }$ ion, it loses two electrons, reducing electron - electron repulsion and causing the remaining electrons to be pulled closer to the nucleus.

Answer:

Question 7: B. False
Question 8: B. False
Question 9: A. True