Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Chemistry Classification of Elements and Periodicity in Properties

பின்வருவனவற்றில் எது டயா காந்தத்தன்மையைக்  கொண்டது?

1
O2
2
\(O^+_2\)
3
\(O^-_2\)
4
\(O^{2-}_2\)
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