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Question
Which of the following element(s) in the modern periodic table resemble elements predicted by Mendeleev?
(More than one option is correct)
Which of the following element(s) in the modern periodic table resemble elements predicted by Mendeleev?
(More than one option is correct)
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Solution
The correct option is D Germanium
When Mendeleev proposed his periodic table, he noted gaps in the table and predicted that unknown elements will be discovered in the future with appropriate properties to fill in those gaps.
The undisovered elements at that time for which gaps were left in the periodic table were named by Mendeleev as Eka-boron, Eka-aluminium, and Eka-silicon.
Scandium, gallium and germanium which were discovered later were found to have properties similar to Eka-boron, Eka-aluminium, and Eka-silicon, respectively.
When Mendeleev proposed his periodic table, he noted gaps in the table and predicted that unknown elements will be discovered in the future with appropriate properties to fill in those gaps.
The undisovered elements at that time for which gaps were left in the periodic table were named by Mendeleev as Eka-boron, Eka-aluminium, and Eka-silicon.
Scandium, gallium and germanium which were discovered later were found to have properties similar to Eka-boron, Eka-aluminium, and Eka-silicon, respectively.
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