Mundane Monday
Pick up papers from front! Turn in last week’s
catalyst and the HW
Answer Catalyst below:
1. Draw the atom model for Calcium?
2. Write the electron configuration for
Calcium.
3. How many valence electrons does Ca
have?
Topsy-Turvy Tuesday
Pick up papers from front! Turn in WANTED
poster!
Answer Catalyst below:
1. Draw the Lewis Dot diagram for N?
2. Draw the Lewis Dot diagram for O??
3. Draw the Lewis Dot diagram for F?
Whimsical Wednesday
No papers from front!
Answer Catalyst below:
1. Draw the Lewis Dot diagram for B?
2. Draw the Lewis Dot diagram for K??
3. Draw the Lewis Dot diagram for Si?
BIG GOAL: 80%
MASTERY
WANTED posters
are due TODAY!
Explosion!
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
What is matter?
What is an atom?
What is an element?
Name 4 elements.
What is the charge and location of the
proton?
What is the charge and location of the
neutron?
What is the charge and location of the
electron?
Where is all the mass in an atom?
What is most of the atom made out of?
What is Snooki’s real name?
What keeps the nucleus together?
What keeps the electrons orbiting the
nucleus?
What did J.J. Thompson Discover?
What was the name of the model he
made?
What scientist came next?
16. What did he discover?
17. What was the name of the model he
made?
18. Spell Ms. Y’s last name.
19. What scientist came next?
20. What did he discover?
21. What experiment did he use?
22. What was the name of the model he
made?
23. How many e- fit on the 1st shell?
24. 2nd shell?
25. 3rd shell?
26. What is a valence electron?
27. What is the atomic number equal to?
28. What is the atomic mass equal to?
Vote! Should the
WANTED poster
project be part of the
st
nd
1 or 2 marking
period grade?
Recap!
Atom has protons, neutrons,
and electrons
Valence electrons are the
electrons in the outermost
shell
Let’s Label the groups!
1
2
13 14 15 16 17
3
4
5
6
7
8
9
10
11 12
18
8 ve7 ve-
6 ve-
5 ve-
4 ve-
2 valence electrons (2 ve-)
3 ve-
1 valence electron (1 ve-)
ALL of the elements in that group have
the same number of valence electrons!
8 ve-
How many valence electrons does
Potassium (K) have?
1
7 ve-
6 ve-
5 ve-
4 ve-
2 ve-
1 ve-
3 ve-
How many valence electrons does
Aluminum (Al) have?
3
From now on, use the
periodic table to find the
number of valence
electrons –
CAN ONLY HAVE UP TO 8
valence electrons!
Look back at the
catalyst…
Why does the atom model say
10 valence electrons for Ca,
but the periodic table says only
2?
The electrons don’t fill up
the energy levels in
order…for now…
ONLY use the periodic table
to find the # of electrons
1.F What is a Lewis Dot
Diagram?
• A quick and easy way to represent the
valence electrons!
• Example: Let’s say element X has 6
valence electrons:
X
• Element Z has 8 valence electrons:
Z
PRACTICE –
Take out a piece of binder paper, fold in
half hot dog style, and number from 1-15
WRITE THE # OF VALENCE ELECTRONS
AND DRAW THE LEWIS DOT DIAGRAMS
FOR THE ELEMENT MS. Y HOLDS UP!
Use you periodic table to find the number
of valence electrons!
TIME TO CHECK!
TRADE WITH A
PARTNER!
What is an orbital?
• When a planet moves around the sun, you
can plot a definite path for it which is
called an orbit. A simple view of the atom
looks similar and you may have pictured
the electrons as orbiting around the
nucleus.
What is an orbital?
• The truth is different, and electrons in fact
inhabit regions of space known as orbitals
• To plot a path for something you need to
know exactly where the object is and be
able to work out exactly where it's going
to be an instant later.
You can't do this for electrons
Why can’t we do this for
electrons?
• The Heisenberg Uncertainty Principle
says - loosely - that you can't know
with certainty both where an electron
is and where it's going next.
That makes it impossible to plot
an orbit for an electron around a
nucleus. Is this a big problem?
No. If something is impossible,
you have to accept it and find a
way around it.
How do we get around this?
• Suppose you had a single
hydrogen atom and at a particular
instant plotted the position of the
one electron.
• Soon afterwards, you do the same
thing, and find that it is in a new
position. You have no idea how it
got from the first place to the
second.
• You keep on doing this over and
over again, and gradually build up
a sort of 3D map of the places that
the electron is likely to be found.
How do we get around this?
• Suppose you had a single
hydrogen atom and at a particular
instant plotted the position of the
one electron.
• Soon afterwards, you do the same
thing, and find that it is in a new
position. You have no idea how it
got from the first place to the
second.
• You keep on doing this over and
over again, and gradually build up
a sort of 3D map of the places that
the electron is likely to be found.
All you can say is that if an
electron is in a particular
orbital it will have a
particular definable
energy.
Each orbital has a name.
The orbital occupied by the
hydrogen electron is called a 1s
orbital.
• The "1" represents the fact that the orbital
is in the energy level closest to the
nucleus.
• The "s" tells you about the shape of the
orbital.
• S stands for a spherical shape
S orbital Shape
p orbital Shape
d orbital Shape
How do you
determine which
orbital and electron
is in?
THE PERIODIC TABLE!
III.B Orbital
Configuration
A way to determine where the
electron is located within an electron
shell
Let’s Label the Periods! (tells the
number of shells/orbitals
1
2
3
4
5
6
7
Shells are outlined below!
1
2
3
4
5
6
7
1
2
3
4
5
6
7
Yellow – “s” orbital
Green – “p” orbital
Blue – “d” orbital
Purple – “f” orbital
Color in your periodic Table!
Whimsical Wednesday
Pick up papers from front and turn in your
hw!
Answer Catalyst below:
1. Write the orbital configuration for B.
2. Write the orbital configuration for Cl.
BIG GOAL: 80%
MASTERY
WANTED posters
are due TODAY!
Explosion!
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
What is matter?
What is an atom?
What is an element?
Name 4 elements.
What is the charge and location of the
proton?
What is the charge and location of the
neutron?
What is the charge and location of the
electron?
Where is all the mass in an atom?
What is most of the atom made out of?
What is Snooki’s real name?
What keeps the nucleus together?
What keeps the electrons orbiting the
nucleus?
What did J.J. Thompson Discover?
What was the name of the model he
made?
What scientist came next?
16. What did he discover?
17. What was the name of the model he
made?
18. Spell Ms. Y’s last name.
19. What scientist came next?
20. What did he discover?
21. What experiment did he use?
22. What was the name of the model he
made?
23. How many e- fit on the 1st shell?
24. 2nd shell?
25. 3rd shell?
26. What is a valence electron?
27. What is the atomic number equal to?
28. What is the atomic mass equal to?
How many electrons can fit in
an orbital?
s orbital – up to 2 electrons
p orbital – up to 6 electrons
d orbital – up to 10 electrons
f orbital – up to 14 electrons
How to determine the orbital?
Read it like a book!
Right to left, top to bottom!
Write the orbital configuration for
H
1
2
3
4
5
6
7
1s1
Write the orbital configuration for
Be
1
2
3
4
5
6
7
1s22s2
Write the orbital configuration for
Carbon (C)
1
2
3
4
5
6
7
1s22s22p2
Write the orbital configuration for
Argon (Ar)
1
2
3
4
5
6
7
1s22s22p63s23p6
Write the orbital configuration for
Bromine (Br)
1
2
3
4
5
6
7
1s2
2s2
2p6
3s2
3p6
4s2
3d10 4p5