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because they didn't react because they have stable valence shells

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What were mendeleevs discoveries and predictions and discoveries abot the periodic table?

Mendeleev predicted that properties of elements are periodic function of atomic mass. He demonstrated it by creating a table.


Which two elements on the periodic tabel would have been placed in different groups in moseleys periodic table but not in mendeleevs?

bi and po


How was mendeleevs periodic table like todays periodic table?

Mendeleev's periodic table arranged elements by increasing atomic mass and grouped elements with similar properties together. Today's periodic table is similar, but it is arranged by increasing atomic number, which reflects the number of protons in an atom's nucleus. Both tables also show periodic trends in properties as you move across and down the table.


What is the bottom section of the periodic table for?

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.


What made mendeleevs periodic table particularly special?

Mendeleev's periodic table was particularly special because it organized elements based on atomic mass and their chemical properties, revealing a periodicity that highlighted the relationships between them. He left gaps for undiscovered elements, predicting their properties, which demonstrated the table's utility and foresight. His work laid the foundation for the modern periodic table, emphasizing the importance of atomic structure and periodic trends in chemistry.

Related Questions

Why the improvement in Mendeleevs periodic table was made?

To understand the concept of Periodic Table


Main idea of mendeleevs first periodic table?

In Mendeleev's periodic table, the elements were arranged in the increasing order of their atomic masses and repeating periodic properties.


What were mendeleevs discoveries and predictions and discoveries abot the periodic table?

Mendeleev predicted that properties of elements are periodic function of atomic mass. He demonstrated it by creating a table.


What letter is missing on the periodic table?

J , and Q are missing.


What changes were made to the periodic table after Dmitri mendeleevs discovery?

they changed the 3 new Elements.


Mendeleevs periodic table was useful because it enabled scientists to predict properties of unknown?

elements


Mendeleevs periodic table of elements was created in 1901?

Actually, Dmitri Mendeleev formulated the periodic law and published his periodic table of elements in 1869. This table arranged elements by increasing atomic mass and grouped them based on similar properties, predicting the properties of missing elements. It was a significant contribution to the field of chemistry.


Which two elements on the periodic tabel would have been placed in different groups in moseleys periodic table but not in mendeleevs?

bi and po


Who is mendeleevs?

Dmitri Mendeleev was a Russian chemist; he proposed the modern Periodic Table of elements in 1869.


How was mendeleevs periodic table like todays periodic table?

Mendeleev's periodic table arranged elements by increasing atomic mass and grouped elements with similar properties together. Today's periodic table is similar, but it is arranged by increasing atomic number, which reflects the number of protons in an atom's nucleus. Both tables also show periodic trends in properties as you move across and down the table.


What were the 3 missing elements in the periodic table?

my vasss


Which group is missing from john newlands periodic tabale?

The noble gases group is missing from John Newlands' periodic table. The noble gases were not discovered until after Newlands proposed his periodic table in 1864.