Exploring Electron Configuration Basics

The video tutorial covers electron configurations, transitioning from the Bohr model to the quantum mechanical model. It explains principal energy levels, sublevels, and orbitals, and their relation to the periodic table. The Aufbau principle is introduced, guiding the order of filling electron orbitals. The tutorial includes practice problems for writing electron configurations of elements like silicon, fluorine, and vanadium.

Who created the electron cloud model in 1926?

• Niels Bohr

• Isaac Newton

• Erwin Schrödinger

• Albert Einstein

What does each period in the periodic table represent?

• A specific type of sublevel

• A group of elements with similar properties

• A principal quantum number or principal energy level

• A type of chemical bond

How many sublevels are there in the third principal energy level?

• Four

• Three

• Two

• One

Which sublevel can hold a maximum of 14 electrons?

• s

• p

• d

• f

According to the Aufbau principle, which energy levels should be filled first?

• The middle energy levels

• The lowest energy levels

• The energy levels with the most sublevels

• The highest energy levels

What is the general format for writing an electron configuration?

• Principal energy level, sublevel, and superscript indicating the number of electrons

• Atomic number, element symbol, and mass number

• Element symbol, atomic number, and electron configuration

• Principal energy level, atomic number, and element symbol

Tags

NGSS.HS-PS1-1

What is the electron configuration for silicon?

• 1s2 2s2 2p6 3s2 3p2

• 1s2 2s2 2p6 3s2 3p4

• 1s2 2s2 2p6 3s2 3p6

• 1s2 2s2 2p6 3s2 3p1

Tags

NGSS.HS-PS1-1

Where is fluorine located in the periodic table?

• 2p3 box

• 3d3 box

• 2p5 box

• 3p2 box

Tags

NGSS.HS-PS1-1

What is the electron configuration for vanadium?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d3

• 1s2 2s2 2p6 3s2 3p6 4s2 3d4

• 1s2 2s2 2p6 3s2 3p6 4s2 3d2

• 1s2 2s2 2p6 3s2 3p6 4s2 3d5

Tags

NGSS.HS-PS1-1

How many electrons are in the third energy level of vanadium?

• 12

• 8

• 10

• 11

Tags

NGSS.HS-PS1-1