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Electron Configuration and Bonding

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Electron Configuration and Bonding

Atomic structure diagram

🎯 WALT: Understand electron configuration and its role in chemical bonding

Success Criteria:

Basic: Describe electron configurations using diagrams or notation

Proficient: Explain how electron arrangements influence bonding types

Advanced: Analyse electron configurations to predict bonding behaviours

📚 Part 1: Electron Configuration Basics

1. How many electrons can fit in the first electron shell?

2 electrons

8 electrons

18 electrons

32 electrons

2. Which element has the electron configuration 2,8,1?

Carbon

Oxygen

Sodium

Chlorine

3. Draw the electron shell diagram for oxygen (atomic number 8):
4. Complete the electron configurations:

a) Hydrogen (1 electron): ______

b) Carbon (6 electrons): ______

c) Neon (10 electrons): ______

d) Magnesium (12 electrons): ______

5. Which of these elements would most likely form ionic bonds? (Select all that apply)

Sodium (2,8,1)

Chlorine (2,8,7)

Carbon (2,4)

Neon (2,8)

✏️ Part 2: Bonding and Electron Arrangement

6. Explain why sodium (2,8,1) and chlorine (2,8,7) form an ionic bond rather than a covalent bond:
7. Compare the electron configurations of these pairs and predict their bonding type:

a) Carbon (2,4) + Oxygen (2,6)

Bonding type: _____________ Reason: _________________________________

b) Lithium (2,1) + Fluorine (2,7)

Bonding type: _____________ Reason: _________________________________

8. Why do noble gases (like neon with configuration 2,8) rarely form bonds?
9. Extension Challenge: Aluminium has 13 electrons. Predict its electron configuration and explain what type of bonding it would most likely form with oxygen (2,6):

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