CHEM 1411 CHAPTER 8 EXAM
QUESTIONS WITH 100% CORRECT
ANSWERS L LATEST VERSION 2025/2026.
The formal charge on carbon in the molecule below is ________. - ANS 0
What species has the electron configuration [Ar]3d4? - ANS Cr2+
A triple bond consists of ________ pairs of electrons shared between two atoms. - ANS 3
Of the possible bonds between carbon atoms (single, double, and triple), ________. - ANS a
double bond is longer than a triple bond
As the number of covalent bonds between two atoms increases, the distance between the
atoms ________ and the strength of the bond between them ________. - ANS decreases,
increases
A valid Lewis structure of ________ cannot be drawn without violating the octet rule. -
ANS ClF3
Which energy change corresponds to the electron affinity of fluorine? - ANS 4
A valid Lewis structure of ________ cannot be drawn without violating the octet rule. -
ANS IF3
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Bond enthalpy is ________. - ANS always positive
What is the electron configuration for the Co2+ ion? - ANS [Ar]3d7
What is the maximum number of triple bonds that a carbon atom can form? - ANS 1
What species has the electron configuration [Ar]3d4? - ANS Cr2+
Determining lattice energy from Born-Haber cycle data requires the use of ________. -
ANS Hess's law
A valid Lewis structure of ________ cannot be drawn without violating the octet rule. -
ANS SeF4
There are ________ valence electrons in the Lewis structure of CH3Cl. - ANS 14
The central atom in ________ does not violate the octet rule - ANS CF4
The ion ICl4- has ________ valence electrons - ANS 36
Which of the following has the bonds correctly arranged in order of increasing polarity? -
ANS O F, N F, Be F, Mg F
What is the electron configuration for the Fe2+ ion? - ANS [Ar]4s03d6
What is the maximum number of double bonds that a hydrogen atom can form? - ANS 0
Using the table of average bond energies below, the ΔH for the reaction is ________ kJ.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
QUESTIONS WITH 100% CORRECT
ANSWERS L LATEST VERSION 2025/2026.
The formal charge on carbon in the molecule below is ________. - ANS 0
What species has the electron configuration [Ar]3d4? - ANS Cr2+
A triple bond consists of ________ pairs of electrons shared between two atoms. - ANS 3
Of the possible bonds between carbon atoms (single, double, and triple), ________. - ANS a
double bond is longer than a triple bond
As the number of covalent bonds between two atoms increases, the distance between the
atoms ________ and the strength of the bond between them ________. - ANS decreases,
increases
A valid Lewis structure of ________ cannot be drawn without violating the octet rule. -
ANS ClF3
Which energy change corresponds to the electron affinity of fluorine? - ANS 4
A valid Lewis structure of ________ cannot be drawn without violating the octet rule. -
ANS IF3
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Bond enthalpy is ________. - ANS always positive
What is the electron configuration for the Co2+ ion? - ANS [Ar]3d7
What is the maximum number of triple bonds that a carbon atom can form? - ANS 1
What species has the electron configuration [Ar]3d4? - ANS Cr2+
Determining lattice energy from Born-Haber cycle data requires the use of ________. -
ANS Hess's law
A valid Lewis structure of ________ cannot be drawn without violating the octet rule. -
ANS SeF4
There are ________ valence electrons in the Lewis structure of CH3Cl. - ANS 14
The central atom in ________ does not violate the octet rule - ANS CF4
The ion ICl4- has ________ valence electrons - ANS 36
Which of the following has the bonds correctly arranged in order of increasing polarity? -
ANS O F, N F, Be F, Mg F
What is the electron configuration for the Fe2+ ion? - ANS [Ar]4s03d6
What is the maximum number of double bonds that a hydrogen atom can form? - ANS 0
Using the table of average bond energies below, the ΔH for the reaction is ________ kJ.
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
