NEET 2000 Chemistry question
Which of the following compound is electron deficient :
Answer: (2)
Solution
An electron-deficient compound is one in which the central atom has fewer than eight electrons in its valence shell (an incomplete octet) after bonding. In boron has three bond pairs, only 6 electrons around it, so it is electron deficient (and acts as a Lewis acid, e.g. dimerisation or accepting a pair
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