NCERT Solutions For Class 11 Chemistry Chapter 10: The s-Block Elements

NCERT Solutions for class 11 Chemistry Chapter 10 The s-Block Elements are provided in the article below. Some of the important topics covered in s-block elements are as follows:

  1. s-orbital
  2. Alkali metal properties
  3. Sodium Carbonate
  4. Sodium Chloride
  5. Carbonates
  6. Sulphates
  7. Group 1 Elements: Alkali Metals
  8. Group 2 Elements : Alkaline Earth Metals

​As this chapter has been deleted from the new CBSE Class 11 syllabus, no questions will be expected from this chapter. It will be useful for other competitive exams.

Download PDF: NCERT Solutions for Class 11 Chemistry Chapter 10 pdf


NCERT Solutions for Class 11 Chemistry Chapter 10

NCERT Solutions for Class 11 Chapter 10 s block elements is given below.

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Class 11 Chemistry Chapter 10 s Block Elements – Important Topics

Group 1 (Alkali metals) and Group 2 (Alkali Earth metals) of the periodic table are called s Block elements. They are strongly electropositive.

  • Alkali metals are where the valence s orbital consists of only one electron.
  • Alkali earth metals are where the valence s orbital consists of two electrons.

Properties of s block elements include:

  • Low atomic and ionic size
  • Greater charge density (charge/volume of the atom)
  • Greater polarization
  • Absence of d-orbitals.
  • The density of the alkali metals increases down the group in the S-block elements.
  • The alkali metals possess a low melting and boiling point because of the weak metallic bonding.
  • A diagonal relationship in the S-block elements can be pointed out between adjacent elements which are present in the second and third period of the periodic table.

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CBSE CLASS XII Related Questions

  • 1.
    Which of the following curve represents the first order reaction?

      • A
      • B
      • C
      • D

    • 2.

      Explain the Finkelstein reaction.


        • 3.

          A reaction \( \mathrm{A \rightarrow B} \) follows second order kinetics. How will the rate of reaction be affected if the concentration of (i) A is increased by three times, and (ii) A is reduced to half ?


            • 4.
              An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it:
              (I) does not give Tollen's test but gives a positive iodoform test.
              (II) does not give Tollen's test and iodoform test but undergoes Aldol condensation.
              (III) undergoes Cannizzaro's reaction.


                • 5.
                  Write the name of basic building units of proteins and nucleic acids. How can you differentiate between Fibrous and Globular proteins on the basis of their structures ?


                    • 6.

                      (a) Write two structural differences between DNA and RNA.

                      (b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.

                      (c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

                        CBSE CLASS XII Previous Year Papers

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