Question

What is the name of the element which is known as Eka-Aluminium?

Hint:

Eka-elements were predicted by Mendeleev based on their position in the periodic table. Eka-Aluminium was later identified as Gallium.

Answer 1

The element known as Eka-Aluminium is Gallium (Ga).
Explanation:
- The term "Eka-Aluminium" was coined by the famous chemist Dmitri Mendeleev, who predicted the existence and properties of several elements before they were discovered.
- Mendeleev left gaps in his periodic table for undiscovered elements. For the element below aluminium, he predicted a metal with properties similar to aluminium.
- Later, this element was discovered and named Gallium. Gallium shares many similarities with aluminium, such as being a soft metal, and it was the first element to be predicted and then discovered based on Mendeleev’s predictions.
Thus, the element known as Eka-Aluminium is: \[ \boxed{\text{Gallium (Ga)}} \]