CHEM 121 FINAL EXAM WITH
CORRECT AND VERIFIED ANSWERS
2024/2025 A+ GRADED EXAM
, Chemical bonds form if - CORRECT ANSWERS-resulting arrangement has a
lower energy that that of separate atoms.
Ionic Bonds - CORRECT ANSWERS-oppositely charged ions held together
by electrostatic charges
Covalent bonds - CORRECT ANSWERS-the sharing of a pair of valence
electrons by two atoms to form a full valence shell
Electronegativity - CORRECT ANSWERS-the tendency of an atom to attract
electrons
non polar covalent bond - CORRECT ANSWERS-equal sharing of electrons
polar covalent bond - CORRECT ANSWERS-unequal sharing of electrons,
pulled towards atom with higher EN
Bond order - CORRECT ANSWERS-number of bond pairs between two
atoms
bond length - CORRECT ANSWERS-distance between 2 nuclei in a bond
As a bond gets longer strength... - CORRECT ANSWERS-decreases
bond dissociation energy - CORRECT ANSWERS-how much energy is
needed to separate two atoms
Formal charge - CORRECT ANSWERS-(#valence e-) - (lone pair e-) - (1/2
bonding e-)
Formal charge assumes... - CORRECT ANSWERS-e- are shared equally
CORRECT AND VERIFIED ANSWERS
2024/2025 A+ GRADED EXAM
, Chemical bonds form if - CORRECT ANSWERS-resulting arrangement has a
lower energy that that of separate atoms.
Ionic Bonds - CORRECT ANSWERS-oppositely charged ions held together
by electrostatic charges
Covalent bonds - CORRECT ANSWERS-the sharing of a pair of valence
electrons by two atoms to form a full valence shell
Electronegativity - CORRECT ANSWERS-the tendency of an atom to attract
electrons
non polar covalent bond - CORRECT ANSWERS-equal sharing of electrons
polar covalent bond - CORRECT ANSWERS-unequal sharing of electrons,
pulled towards atom with higher EN
Bond order - CORRECT ANSWERS-number of bond pairs between two
atoms
bond length - CORRECT ANSWERS-distance between 2 nuclei in a bond
As a bond gets longer strength... - CORRECT ANSWERS-decreases
bond dissociation energy - CORRECT ANSWERS-how much energy is
needed to separate two atoms
Formal charge - CORRECT ANSWERS-(#valence e-) - (lone pair e-) - (1/2
bonding e-)
Formal charge assumes... - CORRECT ANSWERS-e- are shared equally
