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Manipal MET2019ChemistryClassification of Elements and Periodicity in Properties

All the s-block elements of the periodic table are placed in the groups .....

Options

  1. AIA and IIA
  2. BIIIA and IVA
  3. CB sub groups
  4. DVA to VIIA

Correct answer

A. IA and IIA

Step-by-step solution

According to the modern periodic table. If the last electron of element is placed in s -orbital, then elements are known as s -block element. Group IA has elements with n s^1 configuration and IIA has elements with n s^2 configuration.

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