Multiple choice

Which of the following is a drawback of the modern periodic table?

  1. Position of lanthanides and actinides

  2. Position of elements in relation to electric configuration

  3. Regular variation in properties along a period

  4. Position of halogens

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

It fails to accommodate lanthanides and actinides in the main body of periodic table.