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What element was discovered in 1871 by Mendeleev?
The element discovered by Mendeleev in 1871 was germanium. Mendeleev predicted the existence of this element and its properties before it was actually discovered.
What element, when discovered, empirically supported Mendeleev's table?
The element gallium, discovered in 1875, empirically supported Mendeleev's periodic table by fitting into the predicted gaps in the table based on its properties.
What describes mendeleev use of the term eka-aluminum?
Mendeleev used the term "eka-aluminum" to predict the properties of an undiscovered element that would have similar characteristics to aluminum. This was part of his periodic table where he left gaps for undiscovered elements. Eka-aluminum was later discovered and named gallium, confirming Mendeleev's periodic trends.
Why did mendeleev not include germanium in the periodic table?
He could not because it had not yet been discovered when he created the table. However he was able to determine that an element was missing at that location and predict the properties it would have when it was discovered. When germanium was discovered and named, his predictions were found to be very accurate.
What do the long dashes represent on mendeleev's periodic table?
The long dashes on Mendeleev's periodic table represent gaps where elements had not yet been discovered but were predicted to exist based on the periodic pattern of elements. Mendeleev used these gaps to accurately predict the properties of the missing elements, leading to the discovery of new elements.
What element did mendeleev call ekasilicon?
Mendeleev proposed that there must be missing elements, to which he gave the provisional names Ekaboron, Ekaaluminum and Ekasilicon. Scankium, Gallium and Germanpoop were discovered in 1879, 1875 and 1886, respectively, with properties very close to those predicted by Mendeleev. hey Glen
What are the blanks in Mendeleev's Periodic Table?
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.
What is ekasilicons modern name?
Ekasilicon (Mendeleev's name for the element below Silicon, 1869) is named germanium since it was discovered (1886).Eka (from Sanskrit) means 'first' for first element downwards.
What was Mendeleev able to find out for each element?
He was able to work out the atomic mass of the missing elements, and so predict their properties. And when they were discovered, Mendeleev turned out to be right. For example, he predicted the properties of an undiscovered element that should fit below aluminium in his table. When this element, called gallium, was discovered in 1875, its properties were found to be close to Mendeleev's predictions. Two other predicted elements were later discovered, lending further credit to Mendeleev's table.
What is the first element of the Mendeleev's periodic table?
The first element of the Mendeleev's periodic table is hydrogen (H).
How was element germanium discovered?
In 1886 a German chemist named, Clemens A. Winkler discovered germanium. He discovered the first trace of germanium in the mineral argyrodite, while isolating it. (But germanium rarely makes distinct minerals.) He purified it to find the new element. Before this in 1871 a chemist named, Mendeleev predicted there would be a new element, that would have properties similar to the ones in silicon. His predictions were proved to be true.
How many new elements did Mendeleev predict he would discover later on?
Mendeleev predicted that there would be three additional elements to be discovered based on the gaps in his periodic table at the time. These elements turned out to be later discovered and were named gallium, scandium, and germanium.
