Determining Electron Configurations

The video tutorial explains electron configurations, their significance, and how to determine them for different elements. It begins with an introduction to electron configurations and their role in predicting element behavior. The tutorial then covers orbitals and atomic numbers, using oxygen as an example to demonstrate the process of creating electron configurations. It further provides detailed steps for finding electron configurations for tin and neodymium, highlighting the importance of understanding energy levels and blocks in the periodic table.

What is the primary purpose of understanding electron configurations?

• To calculate the weight of an atom

• To determine the color of an element

• To find the temperature at which an element melts

• To predict how elements will behave

Which orbitals are present in the periodic table?

• s, p, d, f

• x, y, z

• m, n, o, p

• a, b, c, d

How many electrons are in the 1s orbital for oxygen?

• 1

• 3

• 2

• 4

What is the electron configuration for tin in the fourth energy level?

• 4s2, 4d10, 3p6

• 4s2, 3d10, 3p6

• 4s2, 4d10, 4p6

• 4s2, 3d10, 4p6

Which energy level does the d-block start in?

• Third

• Second

• First

• Fourth

In the electron configuration for neodymium, which block is two energy levels behind?

• s-block

• f-block

• p-block

• d-block

What is the electron configuration for neodymium in the sixth energy level?

• 6s2, 4f4

• 6s2, 5f4

• 6s2, 6f4

• 6s2, 3f4