Exploring Electron Configuration and Orbital Notation

The video tutorial introduces electron configuration, explaining how electrons are arranged in atoms. It covers the Aufbau principle, Hund's Rule, and Pauli Exclusion Principle, providing examples of electron configurations for elements like carbon, neon, nitrogen, chlorine, aluminum, and vanadium. The tutorial emphasizes understanding the order of filling electron orbitals and the rules governing electron spins and energy levels.

What is the primary purpose of electron configuration?

• To identify the number of protons in an atom

• To determine the atomic mass of an element

• To show how electrons occupy the orbits of an atom

• To calculate the density of an element

According to the Aufbau Principle, where does an electron go first?

• To the highest energy orbital available

• To the orbital with the most electrons

• To the lowest energy orbital available

• To any random orbital

Which orbital is filled first according to the Aufbau Principle?

• 3d

• 1s

• 2p

• 2s

What does Hund's Rule state about electron placement in orbitals?

• Single electrons must occupy each equal energy orbital before pairing

• Electrons must pair up before occupying new orbitals

• Electrons must occupy the highest energy orbital first

• Electrons must have opposite spins in the same orbital

What is the 'School Bus Rule' in the context of electron configuration?

• Electrons fill the highest energy orbital first

• Electrons fill each orbital singly before pairing up

• Electrons prefer to pair up in the same orbital

• Electrons must have the same spin in the same orbital

According to the Pauli Exclusion Principle, how many electrons can occupy a single orbital?

• Two with opposite spins

• Two with the same spin

• One

• Three with different spins

What must be true for two electrons to occupy the same orbital?

• They must have the same spin

• They must have opposite spins

• They must be in different energy levels

• They must be in different orbitals

How many electrons does Neon have?

• 14

• 8

• 10

• 12

What is the electron configuration for Nitrogen?

• 1s2 2s2 2p6

• 1s2 2s2 2p5

• 1s2 2s2 2p4

• 1s2 2s2 2p3

Which orbital is the last to be filled for Vanadium?

• 4s

• 3d

• 3p

• 4p