Exploring Electron Configurations in Depth

The video tutorial covers electron configurations, explaining them as the arrangement of electrons in an atom. It provides historical context, discussing the development of atomic models from Dalton to the modern quantum model. The tutorial explains quantum theory, energy levels, sublevels, and orbital shapes. It outlines rules for determining electron configurations and provides detailed instructions on writing them, including examples. The video also introduces noble gas notation as a shorthand method for electron configurations.

Who discovered the electron?

• Ernest Rutherford

• Niels Bohr

• John Dalton

• J.J. Thomson

What is the modern model of the atom called?

• Thomson Model

• Dalton Model

• Bohr Model

• Quantum Mechanical Model

What does the quantum theory describe?

• The color of atoms

• The mass of protons

• The shape of the nucleus

• Wave properties of electrons

Which sublevel can hold up to 10 electrons?

• p

• f

• s

• d

What is the maximum number of electrons the first shell can hold?

• 32

• 2

• 8

• 18

According to the rules, which orbital do electrons fill first?

• Any available orbital

• Highest energy orbital

• Lowest energy orbital

• Orbitals farthest from the nucleus

What is the electron configuration for hydrogen?

• 2p1

• 1s1

• 1s2

• 2s1

What is the shorthand notation for the electron configuration of calcium?

• [Kr] 5s2

• [Ar] 4s2

• [Ne] 3s2 3p6 4s2

• [He] 2s2 2p6 3s2

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d8?

• Iron

• Nickel

• Zinc

• Copper

What is the purpose of using noble gas notation?

• To find the element's color

• To simplify writing electron configurations

• To identify the number of protons

• To determine the atomic mass