Gallium and germanium (discovered later) were placed below aluminium and silicon in their respective groups. The names given by Mendeleev for Gallium and Germanium are Eka-aluminium and Eka-silicon. Similarly, the gap that he has left for the undiscovered element that comes after aluminium is given the name Eka-aluminium.

True

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False

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Solution

The correct option is A True
Mendeleev predicted the existence of some elements that had not been discovered at that time and left some gaps in his periodic table. He named them by prefixing a Sanskrit numeral, Eka (one) to the name of preceding element in the same group. The gap that he has left for the undiscovered element that comes next to silicon is given the name Eka-silicon.

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Similar questions

Q. State true or false.
Gallium and germanium (discovered later) are placed below aluminium and silicon in their respective groups. The names of Gallium and Germanium as given by Mendeleev are Eka-aluminium and Eka-silicon.

The three elements predicted by Mendeleev from the gaps in his periodic table were known as eka-boron, eka-aluminium and eka-silicon. What names were given to these elements when they were discovered later on?

Mendeleev gave prefix ‘Eka’ (one) to the name of the preceding element for the undiscovered elements in the group. What do the names, Eka-aluminium and Eka-silicon represent according to Mendeleev?

Q. The elements named Eka aluminium and Eka silicon respectively by Mendeleev later turned out to be _____ and _______.

Q. Assertion :According to Mendeleev, the properties of elements are a periodic function of their atomic weights. Reason: Mendeleev left the gap under aluminium and a gap under silicon, and called these elements Eka-Aluminium and Eka-Silicon.

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