CBSE Class 10 Science 2017 Delhi Term II Set 1 Paper

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Question : 9
Total: 36
Write the names given to the vertical columns and horizontal rows in the Modern Periodic Table. How does the metallic character of elements vary on moving down a vertical column? How does the size of atomic radius vary on moving left to right in a horizontal row ? Give reason in support of your answer in the above two cases.
Solution:  
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