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JEE Main - S Block Elements Notes (Free PDF Download)

Last updated date: 24th May 2024
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Download S Block Elements Notes with Important Topics: Score High Marks In JEE Main 2025

Get ready to reach your success in JEE Main 2025 with S Block Elements Notes that focus on important topics. These notes are your key to achieving high marks in JEE Main exams. These revision notes are made by master teachers at Vedantu, who know just what you need. These notes are in the compact form of  S Block Elements and cover everything you should know about the exam. Best part? You can download them for FREE in PDF format.


JEE Main Revision Notes


Text, Images, Videos and PDF


JEE Main

Chapter Name:

S Block Elements

Academic Session:



English Medium



Available Material:

Chapter-wise Notes with PDF

S Block Elements covers alkali metals and alkaline earth metals. These elements have important characteristics such as low ionization energies, high reactivity, and their involvement in various chemical and biological processes, and they are some of the important topics for JEE Main exams. Check out the table below for more information. 

Year Wise Weightage of Questions: JEE Main S Block Elements

Sl. No.


Average No. Of MCQs Asked

Marks per Question

Total Marks





















To reach your goals, prepare for your JEE Main 2024 exams using Vedantu’s S Block Elements Notes PDF and the JEE Main Chemistry Syllabus 2024.

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JEE Main 2025: What to Focus on S Block Elements?

A few topics in the S Block Elements will help you score in JEE Main 2025. Knowing the list of those topics will make it easy for you to prepare and focus on the JEE Main exam.  You can check the list of important topics from the S Block Elements below. Unravel the key concepts, fundamental theories, and vital formulas shaping your success in S Block Elements for JEE Main 2025. 

  • Alkali Metals

  • Alkaline Earth Metals

  • General Properties and Trends

  • Reactivity Patterns

  • Preparation and Properties of Compounds

  • Anomalous Properties

  • Biological Importance

  • Industrial Applications

  • Flame Tests and Spectroscopy

  • Diagonal Relationship (Between Li and Mg)

  • Hydrogen and Its Placement

  • Hydrides of Alkali and Alkaline Earth Metals

  • Uses and Compounds of Be, Mg, and Ca

  • Anomalous Behavior of Beryllium

  • Compounds of Sodium and Potassium

  • Compounds of Calcium and Strontium

  • Solubility of Hydroxides and Sulfates

Easy Access to JEE Main Chemistry Notes: Chapter-wise Links for 2025

Easily enhance your JEE Main Chemistry preparation for 2025 with our chapter-wise notes. Get The links from the table below:

Why Notes of S Block Elements Important for JEE Main 2025?

S-block elements are found in the first two groups of the periodic table. They include alkali metals and alkaline earth metals. These elements possess low ionization energies and are highly reactive due to their tendency to lose electrons and form cations. They exhibit diverse properties, from the softness of alkali metals to the higher melting points of alkaline earth metals. The S Block Elements Chapter holds a significant importance of about 8% in the JEE Main. Expect direct questions from this part, making it a scoring section. Let's explore why this chapter holds such importance:

Elemental Playground:

Imagine an exciting playground where elements dance and interact. Welcome to the S-Block! This region of the periodic table is a hotspot of chemistry action, housing two incredible groups: the Alkali Metals and the Alkaline Earth Metals. Get ready to meet your new chemical buddies!

The Alkali Metals - Group 1 (Naughty But Nice):

Let's kick things off with Group 1, where you'll find elements like Lithium, Sodium, and Potassium. These metallic showstoppers are known for their reactivity – they're so eager to bond with other elements that they're stored under oil to prevent contact with air or water! But don't let their mischievous nature fool you; they play key roles in various aspects of everyday life.

The Alkaline Earth Metals - Group 2 (Earthly Wonders):

Moving on to Group 2, you'll meet Calcium, Magnesium, and friends. Alkaline Earth Metals are less reactive than their Group 1 counterparts, but they still have their own set of cool tricks. You'll find these elements in everything from bones and teeth to fireworks and fertilizers. Talk about leaving a mark!

Interactive Adventures:

Now, let's make learning hands-on and interactive! Picture yourself conducting experiments, observing vibrant flames when alkali metals react, and discovering the importance of alkaline earth metals in your daily life. Don't just read about it – experience it!

Reactions Galore:

Dive into the fascinating world of chemical reactions! Watch as alkali metals sizzle and pop when they react with water, and see alkaline earth metals play a crucial role in industries and medicine. You'll see chemistry come alive before your eyes!

JEE Main Magic:

Oh, did we mention the JEE Main connection? Understanding S-Block Elements isn't just about chemistry fun – it's about acing your exam too! Get a grasp on their properties, reactivity, and applications, and you'll be armed with the knowledge to tackle questions with confidence.

Exploration Beyond:

Once you've conquered the S-Block, you'll realize it's not just about exams. These elements are building blocks of our world, shaping everything from the environment to technology. So, whether you're passionate about chemistry or just curious about the universe, the S-Block journey is just the beginning!

Ready to Unlock Elemental Magic?

The S-Block Elements chapter isn't just a part of your JEE Main preparation – it's a thrilling adventure into the heart of chemistry. So, dive in, explore, and get ready to uncover the enchanting world of S-Block Elements!

S Block Elements Formulas to Learn with Notes

JEE Main formulas are important for doing well in the exam. Using them with organized revision notes becomes useful for understanding everything well. While you go over your JEE Main notes, include the related formulas. First, understand why the formula is used by looking at the notes, and then try it on practice problems. This mix helps you understand better, remember more, and get better at solving problems. These are all very important for doing great in JEE Main 2025.

Most Important Formulas and Equations of S Block Elements 

1. Atomic Structure:

  • Atomic Radius: Increases down the group.

  • Ionization Energy: Decreases down the group.

2. Hydrogen (H):

  • Formation of Water: $2H_2(g) + O_2(g) \rightarrow 2H_2O(l)$

3. Alkali Metals (Group 1A - Li, Na, K, Rb, Cs):

  • Reactivity: Increases down the group.

  • Formation of Hydroxides: $M + H_2O \rightarrow MOH + \frac{1}{2}H_2$

4. Alkaline Earth Metals (Group 2A - - Be, Mg, Ca, Sr, Ba):

  • Reactivity: Increases down the group.

  • Formation of Oxides: $M + \frac{1}{2}O_2 \rightarrow MO$

5. Sodium Hydroxide (NaOH) Reaction:

  • $2NaOH(aq) + H_2SO_4(aq) \rightarrow Na_2SO_4(aq) + 2H_2O(l)$

6. Ammonia (NH3) Properties:

  • Formation of Ammonium Hydroxide: $NH_3 + H_2O \rightarrow NH_4OH$

  • Complex Formation: $Cu^{2+} + 4NH_3 \rightarrow [Cu(NH_3)_4]^{2+}$

7. Sodium (Na) Reactions:

  • With Water: $2Na(s) + 2H_2O(l) \rightarrow 2NaOH(aq) + H_2(g)$

  • With Oxygen: $4Na(s) + O_2(g) \rightarrow 2Na_2O(s)$

8. Calcium (Ca) Reactions:

  • With Water: $Ca(s) + 2H_2O(l) \rightarrow Ca(OH)_2(aq) + H_2(g)$

  • With Oxygen: $2Ca(s) + O_2(g) \rightarrow 2CaO(s)$

9. Lithium (Li) Reactions:

  • With Water: $2Li(s) + 2H_2O(l) \rightarrow 2LiOH(aq) + H_2(g)$

  • With Oxygen: $4Li(s) + O_2(g) \rightarrow 2Li_2O(s)$

10. Flame Test Colors:

  • Sodium: Yellow

  • Potassium: Lilac

  • Lithium: Crimson

You can get the essential JEE Main Chemistry Formula PDF for free from Vedantu’s website and get higher scores in your JEE Main 2025 Exams.

Next-Level Preparation: Supplemental Links for JEE Main 2025 S Block Elements

These extra resources will elevate your preparation for JEE Main 2025 S Block Elements. These links go beyond the basics to provide more learning materials. They're like stepping stones to higher understanding. As you delve into these supplementary links, you'll explore deeper aspects of the chapter. This added knowledge can help you solve complex problems and tackle challenging questions. These links are your secret tools to boost your confidence and excel in your exam. Check out the links in the table below and take your JEE Main 2025 S Block Elements preparation to the next level.

Achieve Success through Vedantu’s JEE Main Notes

As you aim for success in your exams, rely on Vedantu's S Block Elements JEE Main Notes. We stand out with our special way of teaching that combines expert help and easy-to-use materials. Our detailed revision notes make tough ideas easy, making your preparation better. And guess what? You can get these helpful resources as FREE PDFs. Count on Vedantu to support you as you work towards excelling in your exams. Improve your learning, make studying easier, and achieve success with Vedantu.

FAQs on JEE Main - S Block Elements Notes (Free PDF Download)

1. Which are the most important topics of S Block Elements Notes for JEE Main 2025?

The important topics covered in the S Block Elements Notes for JEE Main 2025 include:

  • Properties of Alkali Metals (Group 1 elements)

  • Properties of Alkaline Earth Metals (Group 2 elements)

  • Anomalous Behavior of Lithium

  • Diagonal Relationship between Be and Al

  • Reactivity Patterns and Compounds of Alkali and Alkaline Earth Metals

  • Hydrides, Oxides, and Hydroxides of Group 1 and 2 Elements

  • Solubility and Thermal Stability of Group 1 and 2 Compounds

  • S-block Elements in Biological Systems (Biological importance)

2. Which is the easiest topic of JEE Main 2025 S Block Elements Notes?

The ‘Group 1 and Group 2 Elements’ is often considered one of the easiest topics in the JEE Main's S-Block Elements section. This topic primarily covers the alkali metals (Group 1) and alkaline earth metals (Group 2) in the periodic table, their properties, reactions, and trends, making it relatively straightforward to grasp.

3. How to learn using JEE Main 2025 S Block Elements Notes?

To effectively learn using JEE Main 2025 S Block Elements Notes:

  • Actively engage by underlining key points.

  • Visualize complex concepts using diagrams.

  • Summarize notes for each topic.

  • Practice problems to apply theories.

  • Understand the ‘why’ behind concepts.

  • Regularly revise to reinforce memory.

  • Associate formulas with explanations.

  • Apply concepts in real-world scenarios.

  • Practice problem-solving using examples.

  • Use mockTestsTo simulate exam conditions.

4. Are there any common mistakes students make in S Block Elements problems?

Common mistakes students make in S Block Elements problems include:

  • Mixing up properties of elements within the same group.

  • Misinterpreting trends in atomic size, ionization energy, and electronegativity.

  • Ignoring the filling order of subshells leading to incorrect electron configurations.

  • Overlooking exceptions in electron configuration patterns.

  • Failing to balance or complete chemical reactions involving s-block elements.

  • Misjudging reactivity based on group number alone.

  • Applying general concepts without considering specific element characteristics.

  • Applying one element's behavior to all elements in the group.

  • Mixing up terms like atomic radius and ionic radius.

  • Neglecting valence electrons' role in chemical behavior.

5. Are JEE Main 2025 S Block Elements  Notes recommended for last-minute revision?

Yes, JEE Main 2025 S Block Elements Notes are highly recommended for last-minute revision. These notes condense essential concepts, formulas, and key points, making them ideal for quick recaps before the exam. They help reinforce your memory, summarize crucial topics, and provide a swift overview of the S Block Elements chapter, ensuring you're well-prepared for the exam.

6. Where can I find additional resources to supplement JEE Main 2025 S Block Elements Notes?

You can discover supplementary resources to enhance JEE Main 2025 S Block Elements preparation through Vedantu’s website. These resources offer practice papers, video lectures, interactive quizzes, and discussions that complement your JEE Main notes, enriching your understanding and exam readiness.

7. How much time is required to prepared for JEE Main 2025 S Block Elements Notes?

The time required to prepare for JEE Main 2025 S Block Elements Notes varies based on your familiarity with the concepts, study habits, and practice efforts. On average, a few weeks of consistent study, including active reading, problem-solving, and revision, should provide a solid foundation. However, it's essential to tailor your study plan to your learning pace and commit sufficient time for comprehensive understanding and practice.

8. What is the weightage of S Block Elements Notes for JEE Main 2025?

The weightage of the S Block Elements chapter in JEE Main 2025 is around 9.9%. This means that there are typically 2-3 questions asked from this chapter.