In Mendeleev's Periodic Table, the elements were arranged in the increasing order of their atomic masses and repeating periodic properties.
Three main classes are:MetalsNon metalsTransition elementsThey are present in periodic table.
There are 7 periods in the modern periodic table.
The main metals in the periodic table are iron, copper, zinc, silver, gold, and platinum. Metals are typically found on the left side of the periodic table and are known for their conductivity, malleability, and luster.
It organizes the elements.
The two main developers of the periodic table are Dmitri Mendeleev and Lothar Meyer. Mendeleev is credited with creating the first widely recognized periodic table in 1869, organizing elements by atomic weight and predicting the properties of undiscovered elements. Lothar Meyer independently developed a similar periodic table around the same time, focusing on the relationship between atomic volume and atomic weight. Their contributions laid the groundwork for the modern periodic table used today.
they are all important
13
7
The main families of the periodic table are the alkali metals, the alkaline earth metals, the halogens, and the noble gasses. see them here to view where they are one the periodic table.. hopefully this answers your question.
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 bottom section of the periodic table is for the lanthanides and actinides, which are also known as the inner transition metals. These elements are placed below the main body of the periodic table to keep it compact, as they would otherwise disrupt the table's organization.
18