Test Questions on Electron Configuration – Flashcards
Unlock all answers in this set
Unlock answersquestion
electron configuration
answer
the arrangement of electrons in the energy levels, sublevels and orbitals of atoms
question
Aufbau Principle
answer
states that each electron occupies the lowest energy orbital available
question
Pauli Exclusion Principle
answer
maximum of two electrons may occupy an atomic orbital, but only if they have opposite spins
question
Hund's Rule
answer
- electrons occupy equal energy orbitals so as to maximize the number of unpaired e-s
question
Principle Energy Level
answer
main energy level or distance of an electron from the nucleus; (n); correspond to the rows 1-7 on the Periodic Table
question
sublevels
answer
regions within the energy levels; corresponds to the block grouping s,p,d,f on the Periodic Table
question
s orbitals
answer
spherical orbitals; first to fill for any energy level; can only hold 2 electrons
question
p orbitals
answer
3 mutually perpendicular dumbbell shaped orbitals; second to fill from 2nd energy level on up; can hold max of 6 electrons
question
d orbitals
answer
5 orbitals of cloverleaf shape; third to fill for any energy level; beginning in the third shell, contains a total of 10 electrons; higher in energy than s and p orbitals in the same shell CEKj53gchpBb9A.png
question
f orbitals
answer
their shapes are even more complex than s, p, or d orbitals; can hold a total of 14 electrons in 7 sub-shells; in the fourth and fifth energy levels
question
Nitrogen
answer
name the element 1s²2s²2p³
question
Aluminum
answer
name the element 1s²2s²2p⁶3s²3p¹
question
Titanium
answer
name the element [Ar]4s²3d²
question
Tungsten
answer
name the element [Xe]6s²4f¹⁴5d⁴
question
shorthand notation
answer
uses noble gas configuration from the preceding full level (stable core), along with electrons on current level
question
valence electrons
answer
an electron in the highest occupied energy level of an atom;available to be lost, gained, or shared in the formation of chemical compounds
question
Full Configuration for Mg
answer
1s²2s²2p⁶3s²
question
Full Configuration for Rh
answer
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d⁷
question
Noble Gas Configuration for Ce
answer
[Xe]6s²5d¹4f¹
question
# of orbitals in any s sublevel
answer
1
question
# of orbitals in any p sublevel
answer
3
question
# of orbitals in any d sublevel
answer
5
question
# of orbitals in any f sublevel
answer
7
question
How do you determine the # of Valence electrons?
answer
by counting the # of s and p electrons since the most recent noble gas
question
Why do we fill the 4s orbital before the 3d orbital?
answer
Because the 4s is lower in energy than the 3d, so it is filled first.
question
Electron Configuration for Si
answer
1s²2s²2p⁶3s²3p²
question
Noble Gas notation for Ni
answer
[Ar] 4s²3d⁸
question
Electron Configuration for Sr
answer
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²
question
Electron Configuration for Kr
answer
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶
question
Electron Configuration for Ar
answer
1s²2s²2p⁶3s²3p⁶
