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The periodic table is divided into groups A and B:

Correct answer: A. To differentiate between normal and transition elements

  • A. To differentiate between normal and transition elements
  • B. To differentiate between metals and non-metals
  • C. To differentiate between d and f block elements
  • D. None of these

Explanation

The divisions into groups A and B on the periodic table help to differentiate between the main group elements (also known as representative elements) and the transition elements.* Group A (1 to 2 and 13 to 18): These are the representative elements or main group elements.They include the a kali metals, a kaline earth metals, halogens, noble gases, and other non-transition elements* Group B (3 to 12): These are the transition elements or transition metals. They exhibit typical metallic properties and often form colored compounds due to parsally filled d-orbitals.This classification helps in understanding the periodic trends and properties of elements cased on their electronic configurations and chemical behavior.

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About Periodic Properties and Trends

Periodic properties arise from electron configuration and effective nuclear charge, producing trends in atomic and ionic radius, ionization energy, electron affinity, electronegativity, metallic character and reactivity. Comparisons run across periods and down groups, with attention to common exceptions. The topic also relates these trends to the behavior of s-block and p-block elements.

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