CHEM 121 EXAM 3 CERTIFICATION EVALUATION TESTED QUESTIONS FULL SOLUTION GUIDE

CHEM 121 EXAM 3 CERTIFICATION EVALUATION TESTED QUESTIONS FULL SOLUTION
GUIDE
CHEM 121 EXAM 3 Questions and Answers Verified
Solutions Latest Update 2026/2027

Question:
Group 1A

Answer:
Lowest IE Reacts with H2O explosively Low densities



Question:
Group 2A

Answer:
More dense 2 valence e- Less reactive



Question:
Chalcogens

Answer:
6 valence e- Negative EA Oxygen diatomic molecule



Question:
Halogens

Answer:
7a Most negative EA Oxygen diatomic



Question:
Hydrogen

Answer:

, Very high IE



Question:
Noble gases

Answer:
Monatomic molecules (stable) Unreactive



Question:
Zeff trend

Answer:
Increase left to right, top to bottom



Question:
atomic radius trend

Answer:
increases right to left, top to bottom



Question:
IE trend

Answer:
Increase left to right, bottom to top



Question:
electronegativity trend

Answer:
increases left to right, bottom to top