GTCC CHM 151 Final Exam Questions With
Correct Answers
What is another term for nonbonding electrons?
| | | | | |
lone pair electrons
| |
What does VSEPR theory stand for?
| | | | |
Valence Shell Electron Pair Repulsion
| | | |
What is VSPER theory?
| | |
the best arrangement of a given number of electron domains is the one
| | | | | | | | | | | | |
that minimizes the repulsions among them
| | | | |
True or False, atoms can overlap when sharing electrons
| | | | | | | |
True
What brings the electrons and nuclei closer together?
| | | | | | |
increased overlap |
What decreases electron-electron repulsion?
| | |
increased overap |
Are nonbonding pair electrons larger or smaller than bonding pairs?
| | | | | | | | |
larger
Which has a greater repulsion: a bonding or nonbonding pair of
| | | | | | | | | | |
electrons?
nonbonding pairs |
, Sigma bonds are characterized by...?
| | | |
head to head overlap
| | |
Pi bonds are characterized by...?
| | | |
side to side overlap
| | |
Single bonds are always _________.
| | | |
Sigma bonds |
Can a molecule exist with a bond order of zero?
| | | | | | | | |
No
Lattice energy is proportional with what two factors of ions?
| | | | | | | | |
the charge of the ion and the decreasing size of the ion
| | | | | | | | | | |
What are the electrostatic interactions in covalent bonds?
| | | | | | |
attractions between electrons and nuclei; repulsions between electrons;
| | | | | | |
repulsions between nuclei
| | |
What is electronegativity?
| |
the ability of an atom to attract electrons to themself
| | | | | | | | |
What is the periodic trend of electronegativity?
| | | | | |
increase left to right; increase bottom to top
| | | | | | |
What is a dipole moment?
| | | |
produced by 2 equal but opposite charges separated by a distance
| | | | | | | | | |
The greater the difference in electronegativity, the more _______ the
| | | | | | | | | |
bond is. |
polar
Correct Answers
What is another term for nonbonding electrons?
| | | | | |
lone pair electrons
| |
What does VSEPR theory stand for?
| | | | |
Valence Shell Electron Pair Repulsion
| | | |
What is VSPER theory?
| | |
the best arrangement of a given number of electron domains is the one
| | | | | | | | | | | | |
that minimizes the repulsions among them
| | | | |
True or False, atoms can overlap when sharing electrons
| | | | | | | |
True
What brings the electrons and nuclei closer together?
| | | | | | |
increased overlap |
What decreases electron-electron repulsion?
| | |
increased overap |
Are nonbonding pair electrons larger or smaller than bonding pairs?
| | | | | | | | |
larger
Which has a greater repulsion: a bonding or nonbonding pair of
| | | | | | | | | | |
electrons?
nonbonding pairs |
, Sigma bonds are characterized by...?
| | | |
head to head overlap
| | |
Pi bonds are characterized by...?
| | | |
side to side overlap
| | |
Single bonds are always _________.
| | | |
Sigma bonds |
Can a molecule exist with a bond order of zero?
| | | | | | | | |
No
Lattice energy is proportional with what two factors of ions?
| | | | | | | | |
the charge of the ion and the decreasing size of the ion
| | | | | | | | | | |
What are the electrostatic interactions in covalent bonds?
| | | | | | |
attractions between electrons and nuclei; repulsions between electrons;
| | | | | | |
repulsions between nuclei
| | |
What is electronegativity?
| |
the ability of an atom to attract electrons to themself
| | | | | | | | |
What is the periodic trend of electronegativity?
| | | | | |
increase left to right; increase bottom to top
| | | | | | |
What is a dipole moment?
| | | |
produced by 2 equal but opposite charges separated by a distance
| | | | | | | | | |
The greater the difference in electronegativity, the more _______ the
| | | | | | | | | |
bond is. |
polar
