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Rohini Yadav

UP Board 10th Class 2021 (For Hindi Medium Students)
About UP Board Crash Course
3 years ago

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SUNDARAM SINGH

3 years ago

option 3

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SUNDARAM SINGH

3 years ago

1 qulam = 1.6×10^19 electron then 8 qulam = 8×1.6×10^19 electron = 12.8×10^19 electron

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Ashok Kumar

3 years ago

iii. 12.8 ×10¹⁹ electron

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