Periodic Table Classification and Properties

The video tutorial provides an in-depth explanation of the modern periodic table, focusing on the structure of periods and groups. It introduces a trick to easily determine the period and group numbers of elements using electronic configurations. The tutorial includes examples to illustrate these tricks and discusses the classification of elements into S, P, D, and F blocks. Additionally, it covers the F block elements, including lanthanides and actinides, and their placement in the periodic table.

How many periods and groups are there in the modern periodic table?

• 7 periods and 17 groups

• 7 periods and 18 groups

• 6 periods and 17 groups

• 8 periods and 18 groups

What determines the block classification of an element in the periodic table?

• The element's mass

• The number of protons

• The last electron's subshell

• The atomic number

What is the trick to find the period number of an element?

• Look at the group number

• Check the atomic mass

• Identify the maximum principal quantum number

• Count the total electrons

For an S block element, how do you determine the group number?

• Add 10 to the total electrons

• Add electrons in ns and np subshells

• Count electrons in ns subshell

• Count electrons in n-1 d subshell

What is the trick for finding the group number of a P block element?

• Add 10 to the total electrons

• Count electrons in ns subshell

• Add electrons in ns and np subshells plus 10

• Count electrons in n-1 d subshell

In the example of an element with atomic number 20, what is its period number?

• Second period

• Fourth period

• Third period

• Fifth period

For an element with atomic number 15, what is its group number?

• 13th group

• 14th group

• 15th group

• 16th group

What is the group number for an element with the general electronic configuration ns2 n-1 d3?

• 3rd group

• 4th group

• 5th group

• 6th group

Which series do lanthanides belong to in the F block?

• 3F series

• 4F series

• 6F series

• 5F series

What is the period placement for the 5F series in the periodic table?

• 6th period

• 5th period

• 7th period

• 8th period