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Classification of Elements and Periodicity in Properties NEET PYQs by Physics Wallah

Classification of Elements and Periodicity in Properties is a key NEET Chemistry chapter covering periodic trends, electronic configuration exceptions, and atomic properties. Physics Wallah NEET PYQs with solutions help strengthen concepts, improve accuracy, and prepare for frequently asked exam questions.
authorImageAmit kumar Singh16 Jun, 2026
Classification of Elements and Periodicity in Properties NEET PYQs by Physics Wallah

Classification of elements and periodicity in properties is an important topic in NEET chemistry. Understanding this chapter is important for scoring well in NEET because many inorganic chemistry concepts are built on the trends introduced in this chapter. Students often find this unit tricky, as questions involve comparing periodic properties, identifying electronic configuration exceptions, and analysing trends across groups, periods, and isoelectronic species.

Solutions and revision resources help improve accuracy, conceptual understanding, and question-solving speed for NEET. With NEET PYQs by Physics Wallah, you can practise important exam-level questions and understand periodic trends more clearly. 

PW Classification of Elements and Periodicity in Properties NEET PYQs PDF

Solving previous years’ NEET questions helps you identify important concepts, commonly asked topics, and the overall question pattern from this chapter. The PDF below gives you access to chapter-wise PYQs with solutions so you can strengthen concepts, improve speed, and practise NEET-level questions effectively.

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Classification of Elements and Periodicity in Properties NEET PYQs with Solutions PDF

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Why Practise NEET PYQs from PW?

Questions from the Classification of Elements and Periodicity in Properties are regularly asked in NEET. The questions are primarily based on periodic trends, ionisation enthalpy exceptions, and isoelectronic species. 

This chapter can be confusing due to some small conceptual mistakes causing incorrect answers. Physics Wallah NEET PYQs help you practise these important concepts in a more exam-focused way.

  • Repeated NEET Trend Questions:
    You can practise commonly repeated question types from periodic properties, including atomic radius trends, electron gain enthalpy, shielding effect, and electronic configuration-based exceptions.

  • Focus on Conceptual Exceptions:
    Special attention is given to confusing areas like half-filled stability, anomalous ionisation enthalpy order, and size comparison of isoelectronic ions that are frequently tested in NEET.

  • Chapter-wise Revision Support:
    Quick notes, trend summaries, and concept charts help you revise important periodic table patterns in less time before exams.

  • NEET-Level Practice & Accuracy Building:
    You can improve speed and accuracy by solving exam-oriented MCQs, assertion-reason questions, and NCERT-based PYQs designed around recent NEET trends.

 

Core Topics Covered in Periodic Properties PYQ

When analysing recent papers, questions from this chapter fall into these main categories:

1. Modern Periodic Law and Nomenclature

These questions focus on the foundation of the modern arrangement of elements. You will find straightforward but high-scoring questions covering the Modern periodic law NEET guidelines, especially regarding the systematic IUPAC naming of elements with atomic numbers greater than 100 (Z > 100).

2. Atomic Radius and Ionic Size Trends

A highly targeted area in the exam. Questions frequently test variations in atomic radius NEET PYQ sets across a period or down a group. A favourite sub-topic of examiners is the comparison of sizes among "isoelectronic species" (atoms and ions containing the exact same number of electrons).

3. Ionisation Enthalpy and Electronic Configurations

These periodicity NEET questions test your understanding of the energy required to remove an electron. These problems usually include exceptions caused by extra-stable half-filled or fully-filled electronic subshells, such as the anomalies between Nitrogen and Oxygen or Beryllium and Boron.

4. Acidic, Basic, and Amphoteric Oxides

NEET periodically requires you to identify the nature of elements by looking at their oxides. You must be able to classify compounds into acidic, basic, neutral, or amphoteric categories across a specific periodic trend.

 

FAQs

Why is the classification of elements and periodicity in properties important for NEET?

This chapter is important for NEET because many inorganic chemistry concepts start from here. Questions based on periodic trends, atomic radius, ionisation energy, and electronic configuration are asked regularly in the exam.

Which topics are frequently asked about from periodicity in NEET?

NEET includes questions on atomic radius trends and ionisation enthalpy exceptions. Questions on electron gain enthalpy and isoelectronic species are also frequently asked. The modern periodic table is another important topic from this chapter.

Why do students find periodic trends difficult in NEET?

Many questions in this chapter are based on exceptions to general periodic trends. Students often get confused while comparing ionisation energy and ionic size. Electronic configurations of different elements and ions can also create confusion in NEET questions.

How do NEET PYQs help in mastering periodic properties?

Previous years’ questions help you identify repeated concepts, understand examiner patterns, and improve accuracy in trend-based and assertion-type questions.

Does Physics Wallah provide explanations for tricky exception-based questions?

Yes, detailed solutions are provided for conceptual and trend-based questions. Important exceptions like half-filled stability and ionisation enthalpy variations are explained step-by-step. Solutions for isoelectronic species comparisons are also included for better understanding.
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