Download Chapter 4.3 Modern Atomic Theory:

Modern Atomic Theory
Concept Review
Explain the relationship between
orbitals and energy levels.
•?
Modern Atomic Theory
Concept Review
Explain the relationship between
orbitals and energy levels.
•Electrons are most
likely found in regions
called orbitals
Modern Atomic Theory
Concept Review
•Electrons with
different amounts of
energy exist in
different energy levels
Modern Atomic Theory
Concept Review
•Number of energy
levels filled depends
on number of
electrons
Modern Atomic Theory
Concept Review
Bohr
Modern Atomic
Theory
?
?
Modern Atomic Theory
Concept Review
Bohr
Modern Atomic
Theory
Electrons orbit
nucleus
Planet Like
Location Known
Electrons orbit
nucleus
Wave Like
Location cannot
be determined
Modern Atomic Theory
Concept Review
Explain why electrons move
from level to level.
•?
Modern Atomic Theory
Concept Review
Explain why electrons move
from level to level.
•Electrons jump between
energy levels when an
atom gains or loses
energy.
Modern Atomic Theory
Concept Review
Explain why electrons move
from level to level.
•?
Modern Atomic Theory
Concept Review
Explain why electrons move
from level to level.
•The atom gains energy
by absorbing a particle
of light called a photon.
Modern Atomic Theory
Concept Review
Explain why electrons move
from level to level.
•?
Modern Atomic Theory
Concept Review
Explain why electrons move
from level to level.
•Electrons jump between
energy levels when an
atom gains or loses
energy.
Modern Atomic Theory
Concept Review4. Identify the
maximum number of electrons that
each energy level can hold
Maximum Number
of Electrons
A
B
C
Level 1
Level 2
Level 3
Modern Atomic Theory
Concept Review4. Identify the
maximum number of electrons that
each energy level can hold
Maximum Number
of Electrons
A
B
C
Level 1
Level 2
Level 3
Modern Atomic Theory
Concept Review
Orbital
Type
Shape
A
Sphere
# of
E
2
B
Dumbell
2
C
Varies
2
D
Varies
2
Fills
Group
2
Group
18
Group
12
Element
71
Modern Atomic Theory
Concept Review
Orbital
Type
Shape
A
Sphere
# of
E
2
B
Dumbell
2
C
Varies
2
D
Varies
2
Fills
Group
2
Group
18
Group
12
Element
71
Modern Atomic Theory
Word
Definition
Derivation
Orbital A region in an atom
1932
where there is a high Robert
Mullikan
probability of
Bohr
finding electrons
Nagoaka
Latin
Wheel Track
course
circuit
Word
Definition
Derivation
Photon A unit or quantum of
1926
"unit of
light, a particle of
electromagn
EMR that has zero
etic
rest mass and carries radiation,"
a quantum of
from photoGreek =
energy.
"light" + on
"unit."
Word
Definition
Derivation
Valence An electron that
1919,
Irving
Electrons is found in the
Langmuir
outermost shell of
1852 Edward
an atom and that Frankland
determines the 1789, William
Higgins
elements
"ultimate"
chemical
particles,
properties
Section Review
An atom’s valence electrons are
in the second energy level.
Which two orbitals could it be in?
•?
Section Review
An atom’s valence electrons are
in the second energy level.
Which two orbitals could it be in?
•S or P
Modern Atomic Theory
Section Review
How are energy levels related to
orbitals?
•?
•?
Modern Atomic Theory
Section Review
How are energy levels related to
orbitals?
•Energy levels
•Contain orbitals
Modern Atomic Theory
Section Review
Describe the number of
electrons in each level for N?
•?
Modern Atomic Theory
Section Review
Describe the number of
electrons in each level for N?
•The
Energy
level contains 2
electrons
st
1
Modern Atomic Theory
Section Review
•?
Modern Atomic Theory
Section Review
•The
Energy
level contains the
other 5 electrons
nd
2
Section Review
How many valence electrons
does Nitrogen a member of
group 15 have?
•?
•?
Section Review
How many valence electrons
does Nitrogen a member of
group 15 have?
•7: 5 valence in
the second level
st
•2 in the 1
Modern Atomic Theory
Section Review
What can scientists not know
about an electron?
•?
•?
•?
Modern Atomic Theory
Section Review
What can scientists not know
about an electron?
•Exact Location
•Direction
•Speed
Modern Atomic Theory
Section Review
In which energy levels are the
electrons for Aluminum(Group 13)
•?
•?
•?
Modern Atomic Theory
Section Review
In which energy levels are the
electrons for Aluminum(Group 13)
•2 In the
nd
•8 in the 2
rd
•3 in the 3
st
1
Modern Atomic Theory
Section Review
How many valence for Aluminum
(Element 13 Group 13)?
•?
•?
•?
Modern Atomic Theory
Section Review
How many valence for Aluminum
(Element 13 Group 13)?
•2 In the
nd
•8 in the 2
rd
•3 in the 3
st
1
Modern Atomic Theory
Section Review
•Valence Number
•?
?
•
Modern Atomic Theory
Section Review
•Valence Number
rd
•3 in the 3
(Group
13)
•