10/10: Electronic configuration

• Chemistry
• Secondary Education

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CHEMISTRY 9

MID-SEMESTER TEST

• GOOD AFTERNOON! Perhaps you can greet Teacher Russel and your classmates, too?
• Is your laptop prepared?
• Have you checked any announcements or missing work on our Google Classroom?
• Are you seated in your assigned chair?

Let's make our day right!

apply the skills I have learned to my mid-semester test.

apply the skills I have learned to my mid-semester test.

earn at least 80% of the total mid-semester test marks.

apply the skills I have learned to my mid-semester test.

earn at least 80% of the total mid-semester test marks.

reflect on my mid-semester performance using my results.

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CHEMISTRY 9

MID-SEMESTER TEST

How well are you satisfied with the results of your mid-semester test?

apply the skills I have learned to my mid-semester test.

earn at least 80% of the total mid-semester test marks.

reflect on my mid-semester performance using my results.

How well are you satisfied with the results of your mid-semester test?

I am 100% satisfied and I can help my classmates.

I am 90% satisfied and will practice more!

I am 60% satisfied and I believe I need to speak with my teacher.

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CHEMISTRY 9

17 - Electronic configuration

draw a Bohr's diagram of an atom of an element.

draw a Bohr's diagram of an atom of an element.

write the electronic configuration of an element.

draw a Bohr's diagram of an atom of an element.

write the electronic configuration of an element.

explain why Group VIII elements have the same chemical properties using their electronic configuration.

electron shell

nucleus

electron

What is the maximum number of electrons that shell 1 can hold?

What is the maximum number of electrons that shell 2 can hold?

What is the maximum number of electrons that shell 3 can hold?

What is the maximum number of electrons that shell 4 can hold?

1. 2
2. 8
3. 18
4. 32

Bohr's diagram of an atom

Bohr's diagram of an atom

Electronic configuration (aka electronic structure)

• a shorthand method of describing the arrangement of electrons within the electron shells or energy levels of an atom

Electronic configuration (aka electronic structure)

• a shorthand method of describing the arrangement of electrons within the electron shells or energy levels of an atom

Electronic configuration (aka electronic structure)

• a shorthand method of describing the arrangement of electrons within the electron shells or energy levels of an atom

Electronic configuration (aka electronic structure)

• a shorthand method of describing the arrangement of electrons within the electron shells or energy levels of an atom

Electronic configuration (aka electronic structure)

• a shorthand method of describing the arrangement of electrons within the electron shells or energy levels of an atom

Electron shells

• the allowed energies of electrons in atoms
• electrons fill these shells (or levels), starting with the one closest to the nucleus

How do I draw a Bohr's diagram of an atom of an element?

Sample 1: Draw the Bohr's diagram

Bohr's model

Electronic configuration:

How do I draw a Bohr's diagram of an atom of an element?

Sample 2: Draw the Bohr's diagram

Bohr's model

Electronic configuration:

WE DO it together!

Collaborative Class Work

draw a Bohr's diagram of an atom of an element.

I can draw the Bohr's diagram of an atom of an element.

Yes, I can confidently draw it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

How do I draw a Bohr's diagram of an atom of an element?

Choose ONE. Draw the Bohr's diagram and write the electronic configuration.

Bohr's model

Electronic configuration:

YOU DO it together!

Collaborative Pair or Triad Work

How do I write the electronic configuration of an atom of an element?

Choose ONE. Draw the Bohr's diagram and write the electronic configuration.

Bohr's model

Electronic configuration:

YOU DO it alone.

Independent Practice

+

write the electron configuration of an element.

I can write the electron configuration of an element.

Yes, I can confidently write it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

CLAIM - EVIDENCE - REASONS

Concept: If an atom's outermost shell contains a full set of electrons, it is stable and unreactive.

Claim: All noble gases in Group VIII are unreactive.

Evidence:

Q1: What causes this similarity?

Q3: What pattern do you see in the number of electrons in the outermost shell?

Reason: 

All noble gases in Group VIII are unreactive because _____

explain why Group VIII elements have the same chemical properties using their electron configuration.

I CAN explain why Group VIII elements have the same chemical properties using their electron configuration.

Yes, I can confidently use it.

Yes, I can but need more practice.

No, I lack confidence so I need more practice or ask help from my teacher.

• Accomplish the reflection sheet.
• Share your goal with your seatmate.

Characteristics of isotopes