user image

Geeta V

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

परमाणु क्रमांक ’20’ वाले परमाणु का इलेक्ट्रॉन विन्यास है? [A] 2, 8, 10 [B] 2, 6, 8, 4 [C] 2, 8, 8, 2 [D] 2, 10, 8

user image

Dileep Vishwakarma

3 years ago

C) 2,8,8,2

Recent Doubts

Close [x]