Mendeleev's Prophecy

Mendeleev's periodic table was revolutionary for its time due to its inclusion of gaps for undiscovered elements. He accurately predicted the properties of these elements, such as ECA aluminium, which was later identified as gallium by Paul Lecoc de Bois Baudran. Gallium's discovery validated Mendeleev's predictions, leading to the acceptance of his periodic table. Gallium is notable for its low melting point and applications in thermometers and semiconductors. The discovery of gallium, along with Scandium and Germanium, solidified Mendeleev's periodic table as a scientific masterpiece.

In what ways is gallium different from mercury, particularly in terms of safety and usage?

What impact did the discovery of gallium have on the recognition of Mendeleev's periodic table?