NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements


Physical and chemical properties of the elements are the periodic function of their atomic numbers. The long form of the periodic table, also called Modem Periodic Table, is based on Modern periodic law. In this table, the elements have been arranged in order of increasing atomic numbers. This chapter is considered by many to be of vital importance since it covers concepts that are an essential part of the syllabus for classes 11 & 12 (CBSE), JEE, and NEET. The topics covered in this chapter include:

  • Genesis of periodic classification
  • Modern periodic law and the present form of the periodic table
  • Nomenclatures of elements with atomic number greater than 100
  • Electronic configurations of elements and the periodic table
  • The s-block, p-block, d-block, and f-block elements
  • Metals, non-metals and metalloids
  • Periodic trends in properties of elements
  • Trends in physical properties
  • Trends in chemical properties
  • Trends in chemical reactivity