Mendeleev predicted that this chemical element is under aluminium and near zinc in the periodic table. The predictions for melting point, atomic mass, density etc. were correct.
Examples: density, melting point, atomic weight, density and formula of oxide.
W on the periodic table. the element with the highest melting/boiling point is tungsten.
Yes, it is true for one type of isotope; isotopes of an element have different melting points.
There is no element with a melting point of -183 deg C. The nearest element is Argon, with a melting point of -189 deg C.
Mendeleev predicted that this chemical element is under aluminium and near zinc in the periodic table. The predictions for melting point, atomic mass, density etc. were correct.
You think probable to gallium.
Eka-aluminum corresponds to gallium, which was discovered later by Lecoq de Boisbaudran. Gallium's properties closely match Mendeleev's predictions, such as its atomic weight and properties lying between aluminum and indium in the periodic table.
The melting point of a metallic element can vary widely depending on the specific element. For example, the melting point of iron is 1538 degrees Celsius, while the melting point of mercury is -38 degrees Celsius.
Helium has the coldest melting point of any element, at -272.2 degrees Celsius.
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.
Mendeleev predicted the existence of eka-aluminum (later named gallium) in 1871 based on gaps in his periodic table. Four years later, in 1875, French chemist Paul-Émile Lecoq de Boisbaudran discovered gallium which had similar properties to the predicted eka-aluminum. This discovery validated Mendeleev's periodic table and his prediction methods.
After Carbon (in form of diamond), the element Tungsten (W) has the second highest melting point of 3695 K, 3422 °C, 6192 °F
Helium with a melting point of -272.905
If the temperature is below the melting point then the element is a solid.If the temperature is above the melting point but below the boiling point, then the element is a liquid.If the temperature is above the boiling point, then the element is a gas.
Examples: density, melting point, atomic weight, density and formula of oxide.
The element with a melting point of 650 degrees Celsius is tin (Sn).