Periodic Table and Electron Configuration

The video tutorial explains electron configurations and their relation to the periodic table. It covers how elements are divided into s, p, d, and f blocks based on their electron sublevels. The tutorial also discusses valence electron configurations for main group elements and how to determine an element's position in the periodic table using its electron configuration. Examples of elements like lithium, phosphorus, strontium, krypton, and fluorine are used to illustrate these concepts.

Which block do elements in groups 1 and 2 belong to in the periodic table?

• f block

• d block

• p block

• s block

What sublevel is being filled with electrons for p block elements?

• d sublevel

• f sublevel

• p sublevel

• s sublevel

Despite being in the p block, helium is actually an element of which block?

• s block

• f block

• p block

• d block

What is the valence electron configuration for group 1 elements?

• ns1

• ns2

• np1

• np2

How many valence electrons do group 15 elements have?

• 5

• 4

• 3

• 6

In which period is lithium found based on its electron configuration?

• Period 1

• Period 2

• Period 3

• Period 4

Phosphorus is found in which group of the periodic table?

• Group 14

• Group 15

• Group 13

• Group 16

Strontium is an element of which block?

• f block

• d block

• p block

• s block

Krypton is found in which period of the periodic table?

• Period 4

• Period 3

• Period 2

• Period 5

Fluorine belongs to which group in the periodic table?

• Group 18

• Group 16

• Group 15

• Group 17