Lanthanum and Actinium
The two periods below the periodic table are known as the lanthanides and actinides. These series consist of elements that fall within the f-block of the periodic table.
The two sets of elements found below the Periodic Table are the Lanthanides and the Actinides, which are also known as the Inner Transition Elements. They are placed separately at the bottom of the Periodic Table to keep the table compact and organized.
A period on the periodic table is a horizontal row that represents the number of electron shells an atom has. A series on the periodic table refers to a group of elements that share similar chemical properties, such as the lanthanide and actinide series.
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
Cesium. See the link below for a periodic table
The two periods below the periodic table are known as the lanthanides and actinides. These series consist of elements that fall within the f-block of the periodic table.
The two sets of elements found below the Periodic Table are the Lanthanides and the Actinides, which are also known as the Inner Transition Elements. They are placed separately at the bottom of the Periodic Table to keep the table compact and organized.
The second period at the bottom of the table is called the lanthanide series or the lanthanoid series. It consists of 14 elements with atomic numbers 57 to 70 and is located below the main body of the periodic table.
F-block elements The first row is called lanthanides The second row is called actinides
The elements in the horizontal rows are called periods.
The lanthanides are a series of elements that are placed at the bottom of the periodic table. They are located in the f-block, specifically in the period below the main body of the periodic table. The lanthanides have atomic numbers 57-71.
The name of bottom two rows of the periodic table is lanthinedes and actinides.
A period on the periodic table is a horizontal row that represents the number of electron shells an atom has. A series on the periodic table refers to a group of elements that share similar chemical properties, such as the lanthanide and actinide series.
It is named The PERIODIC TABLE. The periods being the horizontal rows The groups being the vertical columns.
It is called the Periodic Table of Elements.
Cesium. See the link below for a periodic table
Periodic table has 18 groups; see the link below.