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CBSE Class 10 Answered

Drawbacks of Modern Periodic Table
Asked by | 01 Jun, 2008, 12:51: AM
Expert Answer
  1. Positioning of hydrogen has still not been setteled.(It's still in 1st group with metals but has properties like non-metals)
  2. Lanthanides and actinides have not yet been placed in the main body of periodic table.
Answered by | 17 Jun, 2008, 10:20: PM
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