Top Periodic Table Questions for NEET
The Top 5 Periodic Table Questions form one of the most reliable scoring areas in NEET Chemistry. Questions from the periodic table are concept-driven, NCERT-based, and often revolve around predictable trends such as atomic radius, ionization enthalpy, electron affinity, and electronegativity. If you master these trends, you can easily solve even tricky multiple-choice questions within seconds.
In this article, we will cover the Top 5 Periodic Table Questions that are frequently repeated in NEET along with detailed explanations. These questions are carefully selected based on previous years’ trends and NCERT concepts. Additionally, a set of practice questions is included at the end for rapid revision.
Why Periodic Table Questions Are Important for NEET
Understanding the periodic table is not about memorization—it’s about recognizing patterns. The Top 5 Periodic Table Questions often test:
- Periodic trends (size, ionization energy, etc.)
- Group and period behavior
- Exceptions and anomalies
- NCERT-based factual knowledge
Since NEET repeatedly asks conceptual questions from this chapter, mastering the Top 5 Periodic Table Questions can boost your score significantly.
Top 5 Periodic Table Questions for NEET
Question 1: Atomic Radius Trend
Question:
Arrange the following in increasing order of atomic radius:
N, O, F
Solution:
Across a period, atomic radius decreases due to increasing nuclear charge.
Order:
F < O < N
Final Answer: F < O < N
Concept Insight:
This is one of the most common Top 5 Periodic Table Questions. Always remember:
- Across a period → size decreases
- Down a group → size increases
Question 2: Ionization Energy Exception
Question:
Which element has lower ionization enthalpy than expected?
(a) Be
(b) B
(c) N
(d) O
Solution:
Boron (B) has lower ionization enthalpy than Be due to electron entering a higher energy p-orbital.
Final Answer: (b) B
Concept Insight:
Important exception:
- Be > B (unexpected drop)
- N > O (due to half-filled stability)
These exceptions are frequently tested in Top 5 Periodic Table Questions.
Question 3: Electron Affinity Trend
Question:
Which element has the highest electron affinity?
(a) F
(b) Cl
(c) Br
(d) I
Solution:
Although F is smaller, Cl has higher electron affinity due to less electron-electron repulsion.
Final Answer: (b) Cl
Concept Insight:
Trend:
- Cl > F (exception)
This is a classic NEET favorite among the Top 5 Periodic Table Questions.
Question 4: Electronegativity Order
Question:
Arrange in increasing order of electronegativity:
C, N, O, F
Solution:
Electronegativity increases across a period.
Order:
C < N < O < F
Final Answer: C < N < O < F
Concept Insight:
Fluorine is the most electronegative element. Questions like this are staples in the Top 5 Periodic Table Questions list.
Question 5: Metallic Character
Question:
Which element is the most metallic?
(a) Na
(b) Mg
(c) Al
(d) Si
Solution:
Metallic character decreases across a period.
Final Answer: (a) Na
Concept Insight:
- Left → more metallic
- Down → more metallic
This concept is repeatedly tested in Top 5 Periodic Table Questions.
Additional Practice Questions (Concept-Based Rapid Revision)
Question 6
Which has the highest ionization energy?
(a) Na
(b) Mg
(c) Al
(d) Si
Answer: Si
Question 7
Which element has the smallest size?
(a) Li
(b) Be
(c) B
(d) C
Answer: C
Question 8
Which has the highest electronegativity?
(a) N
(b) O
(c) F
(d) Cl
Answer: F
Question 9
Which element shows maximum metallic character?
(a) K
(b) Ca
(c) Sc
(d) Ti
Answer: K
Question 10
Which has highest electron affinity?
(a) O
(b) F
(c) Cl
(d) N
Answer: Cl
Key Trends You Must Remember
To master the Top 5 Periodic Table Questions, revise these core trends:
- Atomic size ↓ across period, ↑ down group
- Ionization energy ↑ across, ↓ down
- Electron affinity generally ↑ across
- Electronegativity ↑ across
- Metallic character ↓ across
Also, memorize key exceptions like:
- Be > B
- N > O
- Cl > F
Common Mistakes Students Make
While practicing the Top 5 Periodic Table Questions, students often:
- Ignore exceptions
- Confuse electron affinity with electronegativity
- Forget orbital concepts (s vs p)
- Rely on memorization instead of trends
Avoid these mistakes to improve accuracy.
Final Revision Strategy
To score full marks from this chapter:
- Focus on NCERT lines and tables
- Practice trend-based MCQs daily
- Revise exceptions multiple times
- Solve previous year questions
If you consistently practice the Top 5 Periodic Table Questions, this chapter can become one of your strongest scoring areas.
FAQ Section
Q1. Are periodic table questions important for NEET?
Yes, periodic table questions are highly important and frequently asked in NEET exams. Mastering trends ensures quick and accurate answers.
Q2. How many questions come from periodic table in NEET?
Usually 1–2 questions appear every year, often based on trends and exceptions.
Q3. What is the most important topic in periodic table for NEET?
Periodic trends like ionization energy, atomic radius, and electronegativity are the most important.
Q4. Are NCERT examples enough for periodic table preparation?
Yes, most NEET questions are directly or indirectly based on NCERT concepts.
Q5. How to quickly revise periodic table for NEET?
Focus on trends, exceptions, and solve the Top 5 Periodic Table Questions regularly.