Why did Mendeleev leave gaps in his periodic table? Use an example to illustrate your answer.
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Michelle15
Mendeleev had successfully predicted the existence of elements which were not known at that time therefore he left gaps in his periodic table . Example Eka boron was for scandium Eka aluminium for gallium
● Why did Mendeleev leave gaps in his periodic table - - Mendeleev put elements with increasing order of atomic masses & arranged them as a table. - Also, he took care that elements with similar properties were put in same groups. - For places where similar elements were not found, Mendeleev predicted that as unknown elements. - He left gaps for these unknown elements which were later discovered. - For example, Mendeleev predicted and left space for silicon like element which was later found to be germanium.
Answers & Comments
Example
Eka boron was for scandium
Eka aluminium for gallium
● Why did Mendeleev leave gaps in his periodic table -
- Mendeleev put elements with increasing order of atomic masses & arranged them as a table.
- Also, he took care that elements with similar properties were put in same groups.
- For places where similar elements were not found, Mendeleev predicted that as unknown elements.
- He left gaps for these unknown elements which were later discovered.
- For example, Mendeleev predicted and left space for silicon like element which was later found to be germanium.
Thanks for asking..