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The number of unpaired electrons in an O2 molecule is:
(1) 0
(2) 1
(3) 2
(4) 3
Ans: 2
Q. Show the Halides of Aluminium? All the four trihalides of aluminium, i.e. AIF 3 , AICI 3 ,, AlBr 3 , and AlI 3 , are known. AIF 3 , is made by treating Al 2 0 3 with HF ga
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