MAT E 273 Exam 1 Questions And Correct Answers/ Latest Update / Already Graded

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MAT E 273 Exam 1 Questions And
Correct Answers/ Latest Update /
Already Graded
QUIZ:Ionic Bond

Ans: when atoms lose or gain electrons (strongest typed of bonding)


Covalent bonding

Ans: electron sharing, close proximity due to orbital overlap, bonding is
directionally dependent


Metallic bonding

Ans: electron "sea", valence electrons are donated to the bulk material
and are free to move throughout


Name the electronegativity ranges for bonding types

Ans: x <= 0.4 nonpolar covalent

0.4<=x<=1.7 polar covalent

x>=1.7 ionic


Order from highest to lowest strength bonding types

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Ans: ionic

covalent

metallic

hydrogen

LDF

Keesom

Debye


LDF

Ans: induced dipole - induced dipole attraction


What is responsible for bonding noble gases

Ans: LDFs


What is the trend as atom size increases

Ans: more opportunities for polarization along with an increased
magnitude of attractive dispersion forces


nonpolar molecule

Ans: symmetric charge distribution on average over time, temporary
polarizations allow such molecules to bond


As n-alkanes increase carbon chain length what happens to LDFs?

Ans: an increasing number of them


Keesom forces