Class 11ChemistryClassification of Elements and Periodicity in PropertiesExtended or long form of periodic table
EasyWhich of the following statements is incorrect?
- AIn Mendeleev's periodic table,third period elements are bridge elements.
- BIn the long form of the periodic table,the total number of groups is $18$.
- CIn the modern periodic table,$III$ $B$ is the $13^{th}$ group.
- DAll of the above are incorrect.
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