Which of the following contains three pairs of electrons around the central carbon atom?

Classify the following species into carbocation,free radical,and carbanion:
$CH_3^{\bullet}, CH_3^{+}, \bar{C}H_3, (CH_3)_3C^{\bullet}, (CH_3)_3C^{+}, (CH_3)_2CH^{+}, (CH_3)_3\bar{C}:, (CH_3)_3\ddot{C}H, C_6H_5CH_2^{\bullet}, CH_3\ddot{C}H_2, C_6H_5CH_2^{+}, CH_2=CHCH_2^{\bullet}, CH_2=CHCH_2^{+}$

The number of hyperconjugation structures involved to stabilize the carbocation formed in the above reaction is $.............$.

The compound $(X)$ will be:

In which of the following pairs is $A$ more stable than $B$?
$A$ $B$

Which of the following species is paramagnetic in nature?