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In , which of the following statement is/are correct?
(a)Four bonds are of the same length and four of different length.
(b)Six bonds are of the same length and two of different length.
(c)The angle is and .
(d)The angle is .

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Important Questions on p-Block elements
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I. It is prepared by the oxidation of sodium borohydride with iodine.
II. It undergoes cleavage reactions with Lewis bases to give borane adducts.
III. It is produced on an industrial scale by the reaction of with .
IV. It is readily hydrolysed by water to give borazine.
V. It burns in oxygen and gives boron trioxide.

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