NCERT Solutions for Class 11 Chemistry Chapter 11 The p-Block Elements


NCERT Solutions for Class 11 Chemistry Chapter 11 The p-Block Elements

In this chapter, students will get to know the general introduction of p-block elements. P-block elements are arranged in six groups of the periodic table which are 13, 14, 15, 16, 17, and 18. This chapter covers only two groups 13 and 14, the rest groups will be covered in the class 12th chapter 7 The p-Block elements. In this chapter, there are 38 questions in the exercise. The NCERT Solutions for Class 11 Chemistry Chapter 11 The p-Block Elements are designed and explained by our subject experts. These NCERT solutions for class 11 help students in their preparation of both CBSE class 11 final examination and in the competitive exams like JEE Main, NEET etc.

The NCERT Class 11 chemistry chapter 11 p-Block Elements is an important chapter for the class 11 students because various questions asked from this topic in class 11 final examination. After completing this chapters students will be able to explain the properties and electronic configuration of p-block elements; general trends in the p-block elements like atomic radius, electronegativity, ionisation enthalpy and electron gain enthalpy; able to describe the trends in the chemical and physical properties of group 13 and group 14 elements; explain anomalous behaviour of boron and carbon; describe allotropic forms of carbon and explain explain properties of important compounds of boron, carbon and silicon.

In p-block elements, the last electron enters the p-orbital of the outermost energy shell. The electronic configuration of p-block elements is ns^2np^{1-6}(except for helium He). The number of p-orbitals is three and the maximum number of electrons that can be filled in a set of p-orbitals is six. There are a total of six groups from 13 to 18 in the p-block elements and boron, carbon, nitrogen, oxygen, fluorine and helium head the groups. The general electronic configuration and the important oxidation states of p-block elements are shown in the table given below-


13 14 15 16 17


General electronic configuration

ns^2np^1 ns^2np^2 ns^2np^3 ns^2np^4 ns^2np^5


The first member of the group



Group Oxidation state

+3 +4 +5 +6 +7


Other oxidation states

+1 +2, -4 +3, -3 +4, +2, -2 +5, +3, +1, -1

+6, +4, +2

Topics of NCERT Grade 11 Chemistry Chapter 11 The p-Block Elements

11.1 Group 13 Elements: The Boron Family

11.2 Important Trends and Anomalous Properties of Boron

11.3 Some Important Compounds of Boron

11.4 Uses of Boron and Aluminium and their Compounds

11.5 Group 14 Elements: The Carbon Family

11.6 Important Trends and Anomalous Behaviour of Carbon

11.7 Allotropes of Carbon

11.8 Some Important Compounds of Carbon and Silicon

NCERT Solutions for Class 11 Chemistry Chapter 11 The P-Block Elements- Exercise Questions

Q-11.1 Discuss the pattern of variation in the oxidation states of B to Ti.

View all NCERT Solutions for Class 11 Chemistry Chapter 11 The p-Block Elements here

NCERT Solutions for class 11 Chemistry


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Structure of Atom


Classification of Elements and Periodicity in Properties


Chemical Bonding and Molecular Structure


States of Matter






Redox Reaction




The S-Block Elements


Organic chemistry- some basic principles and techniques




Environmental Chemistry

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