Which elements were named by Mendeleev by adding the prefix 'Eka' before the name of the preceding element in the same group?
Scandium, Gallium and Germanium
While preparing his periodic table, Mendeleev left gaps for undiscovered elements and named them after the preceding element in the same group using the Sanskrit prefix 'Eka' (meaning 'one'). Eka-boron, Eka-aluminium and Eka-silicon were later discovered as Scandium, Gallium and Germanium respectively.
The other option triples do not fit Mendeleev's Eka-predictions.
Hence, Scandium, Gallium and Germanium is correct.
Similar Questions
The element with the symbol K is:
Which of the following pairs is correctly matched?
Which of the following element symbols does NOT match its element?
Which of the following statements is/are true?
A. Out of 114 elements, 32 are non-metals and others are metals.
B. Every ore is a mineral but every mineral is not an ore.What is the characteristic of Rare Earth Elements?
Which of the following is NOT a feature of Mendeleev's periodic classification?
In Mendeleev's periodic table, the horizontal rows are called:
Group ____ contain non-reactive gases.
The chemical properties of the element having which of the following atomic numbers are similar to magnesium?
The modern periodic table has:
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The correct order of decreasing electron gain enthalpy with negative sign for chalcogens is - Identify
Modern periodic table has:
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____________ is also known as Quick lime.
