Adaptive Practice
Classification of Elements and Periodicity
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Question 1 of 10
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Easy
Who is known as the 'Father of the Periodic Table' for his early work on the classification of elements?
Easy
Which of the following elements is a transition element?
Easy
What is the general electronic configuration of the elements in Group 17 (Halogens)?
Medium
Which property generally increases across a period from left to right in the periodic table?
Medium
Why does the atomic radius decrease across a period?
Medium
Which of the following elements has the highest first ionization energy?
Medium
The periodicity in properties of elements is primarily due to:
Hard
Which of the following statements about the Modern Periodic Table is incorrect?
Hard
Why are the elements of the Lanthanoid series called 'inner transition elements'?
Hard
Which of the following pairs of elements show the greatest difference in electronegativity?