Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the Aufbau principle?
💡 Hint: Think about how you would fill a series of levels.
Question 2
Easy
How many electrons can occupy an orbital?
💡 Hint: Consider Pauli's Exclusion Principle.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the rule that states no two electrons in the same atom can have identical quantum numbers?
- Hund's Rule
- Aufbau Principle
- Pauli Exclusion Principle
💡 Hint: Think about how electrons are arranged in orbitals.
Question 2
True or False: According to Hund's Rule, electrons will pair up in degenerate orbitals before each orbital is singly filled.
- True
- False
💡 Hint: Consider the arrangement of electrons in orbitals.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
If an atom has 20 electrons, what would be its electron configuration?
💡 Hint: Use the rules to fill orbitals according to their increasing energy levels.
Question 2
Explain why copper (Cu) has an electron configuration of [Ar] 3d10 4s1 instead of the expected 3d9 4s2.
💡 Hint: Think about the stability associated with filled and half-filled subshells.
Challenge and get performance evaluation