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In this video Dr Khurram is explaining
Exercise Questions | Chapter 8 | Periodic Table and Periodicity | Class 9 Chemistry | GS Academy | from the platform of GS ACADEMY

00:00 The electronic configuration of the outermost shell of an element is s2 p3. Find out
period number and the group number of the element. In which block will you place
this element?
5:31 What is the group of the element having eight electrons in its outermost shell? In
which physical state does this element exist?
7:08 An element belongs to 16th group and it is a gas. To which period does it belong?
8:11 Baruim (Ba) is present in 2nd group and 6th period. Answer the
following questions about this element. Is it a metal or a non-metal? Will it be electropositive or electronegative? What is the nature of its oxide? In which physical state you expect this element to exist?
10:42 In which group and period you expect to find an element with the
largest atomic radius?
11:28 Can you predict the group number of the most electropositive and the
most electronegative elements?
13:38 Choose among the following the element having the lowest ionization
energy and the element with highest electron affinity. Also assign its
group number and period number Li, K, O, F, CI.
16:55 Which two elements of the periodic table react to give
A basic oxide and An acidic oxide?

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Welcome to GS Academy!
In this video, we discuss the *Exercise Questions of Chapter 8: Periodic Table and Periodicity* from **Class 9 Chemistry**.
This lesson helps students understand *periodic trends, atomic properties, and arrangement of elements* in an easy and clear way.

📘 Topics Covered:
Modern Periodic Table and Periodic Law
Classification of Elements
Groups, Periods, and Blocks
Metals, Non-metals, and Metalloids
Trends in Atomic Size, Ionization Energy, and Electronegativity
Complete Exercise Solution from Textbook

🎯 Ideal for Class 9 Chemistry students (PCTB syllabus) preparing for **board exams, school tests, and concept revision**.

Watch till the end for a full explanation and solution by **GS Academy**.

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