Class 11 Chemistry Chapter 3 NCERT Solutions FREE PDF Download






FAQs on NCERT Solutions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity In Properties
1. What makes an atomic number a better basis for elements classification than atomic mass?
The atomic mass is related to the nucleus present in the centre of the atom. However, the properties of elements depend upon the electronic configuration related to the atomic number. As the electronic configuration of all the elements changes, it leads to a change in their properties. It becomes an easy and more efficient way to classify elements according to different physical and chemical properties. Hence, the atomic number is a better basis for the classification of the elements.
2. Explain the difference between Mendeleev’s Periodic Law and Modern Periodic Law.
The major difference between Mendeleev’s Periodic Table and the Modern Periodic table is the basis of periodicity. According to Mendeleev’s Periodic Law, the atomic mass of the elements is the basis of periodicity. Mendeleev put elements of the same properties into one group. On the contrary, the atomic number of elements constitutes the basis of periodicity to Modern Periodic Law. Henry Moseley claimed that atomic numbers are the correct method to arrange elements in the periodic table.
3. What are the limitations of Newland’s law of octaves?
The limitations that Newland’s law of octaves are;
The classification under this law was successful only until the element calcium, after which every eighth element lacked the same properties that the element lying above it in the same group possessed.
After the discovery of the noble gas elements later, there was a disruption in the table as the inclusion of these disturbed the entire arrangement.
For more in-depth knowledge of the chapter, it is important that the student refers to the NCERT Solutions For Class 11 Chemistry Chapter 3 available on Vedantu website and the app.
4. How is NCERT Solutions for Class 11 Chemistry Chapter 3 helpful for Class 11 students?
The NCERT solutions are planned and devised by experts to meet the needs and demands of the students. They help in preparing the students in such a way that they are able to answer any question that is asked to them in the question paper. classification of elements and periodicity in properties NCERT solutions will prove to be the best guide for the students. The various exercises that these solutions incorporate train the student and help them retain the important concepts. With the practice of these exercises, the student will be thorough with everything that this chapter inculcates which will in effect help them score better marks in the examination.
5. Describe Mendeleev’s periodic table.
In Mendeleev’s periodic table, the arrangement of the elements is made in vertical rows termed as groups, whereas the horizontal rows are named periods.
There are a total of nine rows. These are named in Roman Numerals as I, II, III, IV, V, VI, VII, VIII, zero. The eighth group has in it nine elements that are arranged in three triads. The group named zero has inert gases and elements that have zero valencies.
There are a total of seven periods, 1 to 7, in the periodic table of Mendeleev.
6. What is electronegativity?
Electronegativity refers to the ability of an atom in a given chemical compound to be able to attract shared electrons. This is a qualitative measure and different from the ionization enthalpy and electron gain enthalpy, as measuring it in quantity is not possible. Any given element's electronegativity is not constant and it varies in effect with the element that it is bound to. The students can download the NCERT solutions for this chapter from the website of Vedantu free of cost to get a much deeper insight and knowledge.
7. How to prepare for Class 11 Chemistry Chapter 3?
This chapter requires a strong understanding of the periodic tables that have evolved through the ages. Therefore, the student should be able to distinguish the various periodic tables that are present in the chapter. They should also be capable of listing down the properties of the various elements that each periodic table endorses. To attain this, they will have to practise the exercises that the class 11 chemistry chapter 3 exercise solutions offer. With practice, they will be able to retain all the important points that this chapter inculcates.
8. What is the important topic of Ch 3 chemistry Class 11?
The important topic of Ch 3 Chemistry Class 11 is the classification of elements and periodicity in properties, crucial for understanding periodic trends.
9. What is the name of chapter 3 of NCERT Class 11 chemistry?
Chapter 3 of NCERT Class 11 Chemistry is titled "Classification of Elements and Periodicity in Properties."
10. Who gave periodicity?
Periodicity was established by Dmitri Mendeleev, laying the foundation for organising elements based on their properties.
11. Who wrote the first periodic table?
The first periodic table was proposed by Dmitri Mendeleev, pioneering the systematic arrangement of elements according to their atomic masses.











