DescriptionName:
Chemistry I
– – – – – – – – – – – – Block: – – –
Worksheet #2: Orbital Dia2rams
Answer the following questions using your Unit 3 notes.
I. Fill in the electron configurations for the elements given in the table. Use the orbital filling diagrams
to complete the table.
Electron Configurations for Some Selected Elements
Orbital filling
Element
D
He
D
C
D
0
D
Ne
D
2s
1s
2px
2py
2pz
0
D
0
0
0
0
3s
Electron
configuration
0 1s
0
0 I
[f!J []
0 0 0 1s22s
[fl] IDJ [] [] 0 0 I
ff!I ffJl [] [] [] 0 1s22s22p
[ll] IN] ff1] [] [] 0 I
ff!] ffJ] If!] ff!] ffJ 0 1s22s22p
ff!] ffJ] ff!] ff!I rf41 0 I
ff!l Ill] IN] ~ I!!I ttJ 1s22s22p 3s
ffJ 0
[fiJ 0
1
I
1
I
3
I
5
6
I
1
2. Which element has the following orbital diagram?
a
b
c
Is 2s
20
~ t 14 ~
~
.- i. ‘.
1~
i~ If~
~
A ,
3s
30
i.
Tt Tt-4
t~
1
4s
It~ t
3 U’
smg arrows, show how th e f,0 II owmg orb’tal
I S WI’ll fill
I WI’th e Iect rons,
Electron Configuration
2s
Is
3s
20
30
2
2
6
1s22s 2p 3s
Mg
Si
1s22s22p63s23p 5
1s22s22p63s23p2
Ti
1s22s22p63s23p64s23d2
CI
element (answer)
3d
4s
3d
Name:
Chemistry I
Block:
_
Worksheet #3: Electron Confia:urations
Answer the following questions using your Unit 3 notes.
1. Write the complete electron configuration for each atom on the blank line.
a. Lithium
b. Fluorine
c. Carbon
d. Argon
e. Sulfur
f. Nickel
g. Rubidium
h. Xeon
2. What elements are represented by each ofthe following electron configurations?
3. a. What are valence electrons?
_
b. Explain how an atom’s valence electron configuration determines its place on the periodic table.
c. List the number of valence electrons for the following atoms:
potassium = _ _
magnesium =
_
carbon=
_
nitrogen =
_
4. Place the following orbitals in order of increasing energy:
Is, 3s, 4s, 6s, 3d, 4f, 3p, 7s, 5d, 5p
5. What two elements are exceptions to the way we normally write electron configurations? Write
the expected and the actual configuration of each. What rules are followed? What rules are
violated?
,
–
Name: – – – – – – – – – – – – – Block: – – –
Chemistry I
Worksheet #4: Periodic Table
Answer the following questions using your Unit 3 notes.
1. Identify each element as a metal, metalloid, or nonmetal.
a. fluorine
d. phosphorus
b. germanium
e. lithium
c. zinc
f. oxygen
_
2. a. Circle the transition metals below.
magnesIUm
titanium
chromium
b. Which block (s, p, d, or f) are the transition metals found?
mercury
aluminum
_
3. Give two examples of elements for each category.
a. Noble gases
b. Halogens
c. Alkali metals
d. Alkaline earth metals
4. Explain why the s-block of the periodic table is two groups wide, the p-block is six groups wide, and
the d-block is ten groups wide.
5. Why do the elements potassium and sodium have similar chemical and physical properties?
6. Identify the element that:
a. Contains a fu1l3 rd energy level
c. Outer energy level is 4s2
b. Contains 3 electrons in the 2p level_ _
d. Contains 5 electrons in the 4d level_ _
Purchase answer to see full
attachment
