Class 11 Chemistry: Classification of Elements and Periodicity

This worksheet will help students revise key concepts related to the classification of elements and the periodic trends of their properties, crucial for Class 11 Chemistry.

Class 11CBSEChemistrymediumPractice

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Q1. Which of the following elements has the highest first ionization enthalpy?
- Na
- Mg
- Al
- Si
Q2. The general electronic configuration of d-block elements is:
- (n-1)d^1-10 ns^1-2
- ns^1-2 np^1-6
- ns^1-2
- (n-2)f^1-14 (n-1)d^0-1 ns^2
Q3. Which group of elements is known as chalcogens?
- Group 1
- Group 16
- Group 17
- Group 18
Q4. Among the following, the element with the largest atomic radius is:
- K
- Na
- Li
- Rb
Q5. The most electronegative element in the periodic table is:
- Chlorine
- Oxygen
- Fluorine
- Nitrogen

+ 5 more in the printable PDF.