Question

did Mendel had gaps in his periodic table we want limitations of Mendeleev classification Si electron dot electronic configuration of atom change in period with increase in atomic number


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Answer 1

Answer:

yed it had gaps

limitation

1. hydrogen plce was uncertain

2.isotopes where not invented

3. 2 elements where having same atomic mass no. hence they where placed in same place

4 . there was uncertainty about atomic mass

Si is an metalloid