Worksheet #1: Atomic Spectra
Answer the following questions using your Unit
3 notes.
1. How did Bohr expand on
Rutherford’s model of
the atom?
2.
How many electrons can each of the following orbitals hold?
a.
2s = ________ d. 6d =
________
b.
3p = ________ e. 4p =
________
c.
5f = _________ f. 3d = ________
3.
How many “p” orbitals can there be in any energy level? ____________________________
4.
What is the maximum number of electrons in the 3rd principle
energy level? ____________
5.
How many orbitals are in each of the following sublevels??
a.
4p sublevel ____________ c.
4f sublevel ____________
b.
3d sublevel ____________ d.
2s sublevel ____________
Worksheet #2: Orbital Diagrams
1. Write the
electron configurations for Na, Ga and Ag.
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1s
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2s
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2p
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3s
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3p
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4s
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3d
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element (answer)
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a
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F
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b
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Zn
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c
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As
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3. Using arrows, show how the following orbitals
will fill with electrons.
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Electron
Configuration
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1s
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2s
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2p
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3s
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3p
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4s
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3d
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Mg
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1s22s22p63s2
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Cl
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1s22s22p63s23p5
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Si
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1s22s22p63s23p2
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Ti
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1s22s22p63s23p64s23d2
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Worksheet #3: Electron Configurations
Answer the following questions using your Unit
3 notes.
1. Write the complete electron
configuration for each atom on the blank line.
- Lithium
- Fluorine
- Carbon
- Argon
- Sulfur
- Nickel
- Rubidium
- Xeon
2.
What elements are represented by each of the following electron
configurations?
a. 1s2 2s2 2p5 c. 1s2 2s2 2p6
3s2 3p6 4s2 3d10 4p65s2 4d10
5p4
b. 1s2 2s2 2p6
3s2 3p6 4s2 d. 1s2 2s2 2p6
3s2 3p6 4s2 3d10 4p5
3. a. What are valence electrons? ____________________________________________________
- Explain how an atom’s valence electron configuration determines its place on the periodic table.
- List the number of valence electrons for the following atoms:
potassium = magnesium =
carbon = nitrogen =
4.
Place the following orbitals in order of increasing energy:
1s,
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?
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
mercury aluminum
b. Which block (s, p, d, or f) are the
transition metals found?
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 full 3rd energy level c.
Outer energy level is 4s2
b.
Contains 3 electrons in the 2p level d.
Contains 5 electrons in the 4d level
Worksheet #4 CONTINUED…..
Answer the following questions using your Unit
3 notes.
7.
Write the electron configuration for the element fitting each of the
following descriptions.
a.
The metal in Group 15
b.
The halogen in period 3
c.
The alkali metal in period 2
d.
The transition metal that is liquid at room temperature
FLASHBACK TIME J!!
1. Write the electron
configuration for the following elements:
Cesium =
_________________________________________________
Potassium
= ________________________________________________
Uranium =
__________________________________________________
2.
Give an example of the following:
a.
Homogenous mixture =
_____________________________________
b.
Heterogeneous mixture = ___________________________________
c.
Element = ____________________
d.
Compound = __________________
3.
Name the scientist who contributed the following to the discovery of the
atom:
a.
Discovered the nucleus ______________________________
b.
Used the cathode ray tube ______________________________
c.
Discovered protons ______________________________
4.
How many protons, neutrons, and electrons does the element cobalt have?
Worksheet # 5:
Check What You Know
Answer the following questions using your Unit
3 notes.
1. How
many orbitals are in the following sublevels?
a) 3p
sublevel = _____ d) 3d sublevel
= _____
b) 2s
sublevel = _____ e) 4f sublevel
= _____
c) 4p
sublevel = _____
2. Write
the full electron configuration for each atom.
a)
Phosphorus = _______________________________
b) Gold = _______________________________
c) Iodine =
_______________________________
3. Give the symbol and names of the elements that correspond to these
configurations of an atom. Where does this element belong in the period table
(e.g. noble gas, metalloid, etc..)
a) 1s22s22p63s1
= ________________________
b) 1s22s22p63s23p64s23d8
= _________________________
c) 1s22s22p63s23p64s23d104p4
= ______________________________
4. Distinguish between the ground state and the
excited state of an atom.
5. Draw
the orbital diagram for the element Manganese.
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