Tagged: F-block

Atomic size in the modern periodic table

October 13, 2020

Elements classification, Mendeleev’s, Moseley’s and Modern periodic table

Elements of the group (1A) are known as alkali metals because they react with water forming alkaline solutions. Potassium is more active than sodium because the atomic size of potassium is larger than that...

The Matter

February 4, 2015

The lanthanides and actinides in the modern periodic table

Lanthanides and actinides Lanthanides and actinides are located below the modern periodic table, They consist of two rows, They are known as the f-block elements because they have valence electrons in the f-shell, Lanthanides...