Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Chemistry Periodic Table

तत्वों N, O, F और P की विद्युत ऋणात्मकता का सही क्रम है

1
F > N > P > O
2
F > O > P > N
3
F > O > N > P
4
N > O > F > P
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