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NEET levelSingle correct optionDifficulty 1 of 3g1206

In the tert-butyl cation, $(CH X_{3}) X_{3} C X^{+}$ , the positively charged carbon is:

Asp3 hybridised with tetrahedral geometry
Bsp2 hybridised with trigonal pyramidal geometry
Csp2 hybridised with trigonal planar geometry
Dsp hybridised with linear geometry

Answer: C

The cationic carbon has three sigma bonds and an empty p orbital. It is therefore sp2 hybridised and trigonal planar, with the empty p orbital perpendicular to the plane.

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