Electron Configuration

Paul Anderson introduces electron configurations, explaining their significance in chemistry. He discusses ionization energy, Coulomb's law, and the organization of electrons into shells, subshells, and orbitals. The video covers the shielding effect of core electrons on valence electrons and analyzes ionization patterns in the periodic table. Anderson explains electron configurations using quantum mechanics and provides practical examples, including noble gas notation. The video concludes with a summary of key learnings.

What is the primary focus of electron configurations?

• Distribution of energy levels in an atom

• Distribution of electrons in atoms or ions

• Distribution of neutrons in an atom

• Distribution of protons in an atom

Which law is used to quantify ionization energy?

• Newton's Law

• Boyle's Law

• Coulomb's Law

• Ohm's Law

Why does helium have a higher ionization energy than hydrogen?

• Helium has more electrons

• Helium has a larger atomic radius

• Helium has more protons, increasing the positive charge

• Helium is a noble gas

What effect does electron shielding have on ionization energy?

• Has no effect on ionization energy

• Doubles the ionization energy

• Decreases ionization energy

• Increases ionization energy

What do the big spikes in the ionization energy chart represent?

• Halogens

• Alkali metals

• Noble gases

• Transition metals

How are electrons organized within an atom?

• Into shells, subshells, and orbitals

• Into ions and isotopes

• Into molecules and compounds

• Into protons and neutrons

What is the maximum number of electrons that can occupy a p orbital?

• 2

• 4

• 6

• 8

Which element has the electron configuration 1s2 2s2 2p6 3s1?

• Neon

• Aluminum

• Sodium

• Magnesium

How can electron configurations be abbreviated?

• By using the element's mass

• By using the noble gas configuration

• By using the element's symbol

• By using the atomic number

What is the electron configuration for boron?

• 1s2 2s2 2p1

• 1s2 2s2 2p2

• 1s2 2s2 2p3

• 1s2 2s2 2p4