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When making his Periodic Table Mendeleev noticed some spaces where elements should be couldn't be filled. He didn't want to force elements that didn't belong there to go there, so he believed the spaces were undiscovered elements. He left the names blank but predicted their properties. Later the elements Mendeleev predicted existed were discovered.
What else can I help you with?
What was Dimitri Mendeleïevs contribution to chemistry?
The organization of the elements (metals, non-metals, and semi-metals) which is known as the Periodic Table Of Elements.
How does science empower?
Science is the pursuit of knowledge. Having a lot of knowledge and education can help people to do more in their lives, thus empowering them. They could make big discoveries that make a major contribution to society.
What are the importance of studying food science?
To have proper knowledge about nutrition,food elements. It helps to know about daily requirement of nutrients. To have knowledge about balance diet, food absorption etc. food preparation n preservation can also learn form it.
What is contribution in science?
A contribution is the act of giving something in order to help achieve or bring about some result.
What is a system of knowledge and the methods used to find that knowledge?
Science is a system of knowledge and the methods used to find that knowledge.
Did Mendeleevs group his elements with those of similar properties?
Yes, this affirmation is true.
What value was there in predicting the properties for gaps in Mendeleevs table?
DiscoVery of new elements
What was the problem with Mendeleevs table?
He left too many spaces between the elements......
What changes were made to the periodic table after Dmitri mendeleevs discovery?
they changed the 3 new Elements.
Which kind of properties fell into families or groups in Mendeleevs system of elements?
Non-metals and Metalloids
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 did later chemists change Mendeleevs periodic table?
They used atomic number instead of Atomic Mass to organize the elements
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.
