In Mendeleev's Periodic Table, gaps were left for the elements to be discovered later. Which of the following elements found a place in the Periodic Table later?
Chlorine
Silicon
Oxygen
Germanium

Academic Chemistry NCERT Class 10

Correct Answer: (d) Germanium

Explanation: The element Germanium found a place in the periodic table later in the place of Eka–silicon in Mendeleev's periodic table.

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Updated on: 10-Oct-2022

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In Mendeleev’s periodic table, gaps were left for the elements to be discovered later. Which one of the following elements found a place in the periodic table later?GermaniumChlorineOxygenSilicon
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?
(a) State Mendeleev’s periodic law.(b) What chemical properties of elements were used by Mendeleev in creating his periodic table? (c) State any three limitations of Mendeleev’s classification of elements. (d) Besides gallium, which two other elements have since been discovered for which Mendeleev had left gaps in his periodic table ? (e) Which group of elements was missing from Mendeleev’s original periodic table?
Besides gallium, which other elements have since been discovered that were left by Mendeleev in his periodic table?
Who discovered the periodic table?
Name of 118 elements in the periodic table.
Compare and contrast the arrangement of elements in Mendeleev’s Periodic Table and the Modern Periodic Table.
Define the Periodic Table with elements name.
Electronegativity of Elements in Modern periodic Table
Consider the following elements:Na, Ca, Al, K, Mg, Li (a) Which of these elements belong to the same period of the periodic table? (b) Which of these elements belong to the same group of the periodic table?
Consider the following elements:20Ca, 8O, 18Ar, 16S, 4Be, 2He Which of the above elements would you expect to be: (i) very stable? (ii) in group 2 of the periodic table? (iii) in group 16 of the periodic table?
In the modern periodic table, which are the metals among the first ten elements?
List the valency of the first 30 elements of the periodic table.
(a) How were the positions of isotopes of an element decided in the modern periodic table?(b) How were the positions of cobalt and nickel resolved in the modern periodic table? (c) Where should hydrogen be placed in the modern periodic table? Give reason for your answer.
Electron Gain Enthalpy of Elements in Modern Periodic Table

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