Understanding Electron Configuration Concepts

This video tutorial covers the basics of electron configuration, including how to identify atoms based on their electron configurations and how to determine the electron configuration of a neutral atom. It explains principal energy levels, orbitals, and sublevels, and provides examples using elements like carbon and calcium. The tutorial also demonstrates how to reverse engineer electron configurations to identify elements.

What is the primary purpose of learning electron configuration?

• To determine the atomic mass of an element

• To identify the number of protons in an atom

• To identify an atom based on its electron configuration

• To calculate the density of an element

How many principal energy levels are there?

• Eleven

• Nine

• Seven

• Five

What do orbitals represent in an atom?

• The atomic mass of the element

• The number of protons in the nucleus

• The probability areas of finding an electron

• The exact location of electrons

Which letters are used to designate sublevels?

• s, p, d, f

• x, y, z, w

• m, n, o, p

• a, b, c, d

How many sublevels are present in the third energy level?

• One

• Two

• Three

• Four

What is the first step in writing an electron configuration?

• Identifying the atomic mass

• Counting the number of neutrons

• Finding the atomic radius

• Determining the principal energy level

What does the exponent in an electron configuration indicate?

• The number of protons

• The number of neutrons

• The number of electrons in a sublevel

• The atomic mass

How many electrons does carbon have?

• Six

• Ten

• Eight

• Four

What is the electron configuration for calcium?

• 1s2 2s2 2p6 3s2 3p6 4s2

• 1s2 2s2 2p6 3s2 3p6

• 1s2 2s2 2p6 3s2 3p6 4p2

• 1s2 2s2 2p6 3s2 3p6 3d2

If an element has an electron configuration ending in 3p4, what is the element?

• Sulfur

• Phosphorus

• Chlorine

• Argon