Which of the following species have a trigonal planar shape ?
A
CH−3
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B
CH+3
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C
BF−4
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D
SiH4
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Solution
The correct option is BCH+3
The methyl carbocation (CH+3) has trigonal planar shape.
Maintaining a positive charge is easier than negative charge and negative charge makes the shape to pyramidal. The positive charge does not affect the shape and it is trigonal planar.