Multiple Choice Question Answer XIII — task. Science CBSE, Class 10.

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1. The highly metallic element will have the configuration of

2, 8, 7
2, 8, 2
2, 8, 8, 1
2, 8, 8, 5

2. Which of the following remains unchanged on descending a group in the periodic table?

Metallic character
Valence electrons
Density
Atomic size

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