CHEMISTRY
November 6, 2014
LAB 06 – Electron Configuration
LAB STARTER
• You have 5 minutes. You
are seated and quiet
• Do the Lab Starter
ANNOUNCEMENT
• TAKE YOUR IN-CLASS PACKET
HOME TO COMPLETE IF YOU NOT
COMPLETED YET.
AIM
• WHICH COLOR REQUIRES AN
ELECTRON IN ITS EXCITED
ENERGY STATE TO OCCUPY A
HIGHER ENERGY LEVEL?
PROCEDURES
• USING BEANS AND THE ELECTRON SHELL
TEMPLATE, CREATE THE SHELL ELECTRON
CONFIGURATION FOR DIFFERENT ELEMENTS
IN THE GROUND STATE
• USING THE SAME BEANS AND ELECTRONS
SHELL TEMPLATE, CREATE THE SHELL
ELECTRON CONFIGURATION FOR DIFFERENT
ELEMENTS IN THE EXCITED STATE
Pre-lab Question 1
• What is the maximum
numbers of electrons in Energy
Level 1 (shell)?
Pre-Lab Question 2
• If the electron configuration is 2-8-4,
How many energy levels does the
element have? What is the total number
of electrons?
What is the maximum number of
electrons in the outside shell?
CRITICAL THINKING
• A mystery element has an electron
configuration of 2-8-16-2 in its ground state.
This should take about 5 minutes.
– Identify the number of protons
– What is the name for the mystery element?
– Explain how you came up with the answer. You
must use the word electron in your answer. The
answer must be at least 2-3 complete sentences.
GROUND STATE VS EXCITED STATE
• Using the periodic table, identify if the element is in
its ground state or in an excited state by circling the
right choice.
• Nitrogen (2-5):
ground state/excited state
• Iron (2-7-15-2):
ground state/excited state
• Potassium (1-8-9-15): ground state/excited state
• Lithium (1-2):
ground state/excited state
• Silver (2-8-18-18-1): ground state/excited state
• Chromium (2-8-12-2): ground state/excited state
TO GROUND STATE
• Using the periodic table, write the ground
state for the given excited electron
configuration. This should take 5 minutes
• Aluminum (2-7-4):
• Arsenic (1-8-18-6):
• Chlorine (2-6-9):
• Copper (2-7-18-2)
• Sulfur (2-6-8):
• Iodine (2-8-16-18-9):
POST LAB QUESTION 1
• The electron configuration for the element
fluorine is both 2-7 and 1-8. Explain how the
movement of electrons makes the existence of
both electron configurations possible.
POST LAB QUESTION 2
• Based on your lab readings and our previous
class discussion, which color requires the
electrons (in its excited energy state) to
occupy a higher energy level. Provide
evidence to support your claim