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Mendeleev named the missing elements after elements in the same group. he gave the name eka-aluminum to the element that belonged one space below aluminum on the able. Mendeleev predicted that eka-aluminum would be a soft metal with a melting point at a density of 5.9 g/cm3.

In 1875,a french chemist discovered a new element. He named the element gallium in honor of France. Gallium is a soft metal with a melting point of 29. degrees Celsius and a density o f5.91 g/cm3.

So pretty much in short Mendeleev left blank spaces because of Gallium.

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13y ago
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14y ago

Because some of the elements were not yet discovered so he left them blank for other elements to be discovered.

-bobby corner

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14y ago

At the time Mendeleev made the Periodic Table, some elements had not been discovered

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9y ago

Mendeleev left those gaps for the elements which were not discovered at that time.He named it eka-aluminium, eka-silicon etc.

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11y ago

scandium, geranium, gallium

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Q: What are the blanks in Mendeleev's Periodic Table?
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How was mendeleevs periodic table like todays periodic table?

it has elements


Why the improvement in Mendeleevs periodic table was made?

To understand the concept of Periodic Table


Mendeleevs periodic table of elements was created in 1901?

Mendeleev's periodic table of elements certainly wasn't created in 1901


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.


How many blanks were in Mendeleev's periodic table?

Four


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 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


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.


What did Mendeleevs periodic table look like?

It looks the same as it did when Mendeleev created it. There are no changes made to the table throughout the years because Mendeleev had predicted the correct placement for all of our current known elements.


Why did the developers of the periodic table know to leave blanks for undiscovered elements?

The developers knew to leave blanks because they knew that when humans will discover elements yet to come or create new elements, so people can update the periodic table so it can be more accurate.