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Chemistry 10 Sir
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Asked: 2020-12-18T06:36:46+00:00 In:

Elements of 1st period contains valence electron in –

  • 5

Poll Results

2.5%(a) M. Shell ( 2 voters )
13.75%(b) N. Shell ( 11 voters )
78.75%(c) K. Shell ( 63 voters )
5%(d) L. Shell ( 4 voters )
Based On 80 Votes

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NCERT Solutions for Class 10 Science Chapter 5
Important Board Questions
Periodic Classification of Elements
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Multiple Choice Question
Questions No: 1

2020-2021cbsechapter 5class 10class 10 sciencencertperiodic classification of elementsscience
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    1 Answer

    1. (c) K. Shell

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