Organic Chemistry Flashcards
Chemical reactions occur as a result of:
Attraction between opposite charges
Nucleus–Nucleus interactions
Motion of electrons
Like atoms interacting
Combining two chemicals
Motion of electrons
Constitutional isomers may not differ in what aspects?
Physical properties
Atomic connectivity
Molecular formula
Name
Constitution
Molecular formula
Carbon generally forms four bonds and is considered:
Tetravalent
Divalent
Trivalent
Monovalent
Qudravalent
Tetravalent
What force is not taken into account in the formation of a covalent bond?
Repulsion between two positively charged nuclei
Repulsion between electron clouds on individual atoms
Force of attraction between positively charged nuclei and electrons
Repulsion of electrons by neutrons
All forces listed are involved in forming a covalent bond
Repulsion of electrons by neutrons
The bonding pattern of nitrogen with a formal charge of +1 could be described as:
One lone pair of electrons and three bonds
Two lone pairs of electrons and two bonds
Three lone pairs of electrons and one bond
Zero lone pairs of electrons and three bonds
Zero lone pairs of electrons and four bonds
Zero lone pairs of electrons and four bonds
Select the least electronegative element from the list below:
B
C
N
O
F
B
Select the most electronegative element from the list below:
O
N
C
B
H
O
Select the series of atoms that is correctly arranged in order of increasing
electronegativity.
C < N < B < Br
P < N < As < F
Li < B < N < F
Cl < Cs < C < Co
Be < B < Ba < Br
Li < B < N < F
Based on electronegativity, which of the compounds below has a partial negative charge on the bonded hydrogen atom?
BH3
CH4
NH3
H2O
CH4
BH3
How many distinct p orbitals exist in the second electron shell?
2
3
4
5
6
3
Orbitals that are equivalent in energy are referred to as:
quantum
antibonding
bonding
degenerate
LUMO
degenerate
The electrons of carbon are best described as found in which orbitals?
Three s electrons; Three p electrons
Two 1s electrons; Four 2p electrons
Two 1s electrons; Two 2s electrons; Two 2p electrons
Two 1s electrons; Two 2s electrons; Four 2p electrons
None of these choices are correct.
Two 1s electrons; Two 2s electrons; Two 2p electrons
Which principle states that each orbital may hold a maximum of 2 electrons with
opposite spins?
Aufbau principle
Pauli exclusion principle
Hund’s rule principle
LeChâtelier principle
Uncertainty principle
Pauli exclusion principle
In quantum mechanics a node (nodal surface or plane) is:
a place where Ψ is negative.
a place where Ψ is positive.
a place where Ψ = 0.
a place where Ψ^2 is large.
a place where Ψ^2 is negative.
a place where Ψ = 0.
All single bonds can be classified as:
nonpolar covalent.
polar covalent.
ionic.
σ bonds.
π bonds.
σ bonds.
