Nucleophiles donate a free electron pair to the electron deficient centre of the organic substrate

Which of the following is electron deficient?

Iso electronic pair among the following

Which pair of orbitals have electronic density along the axis

Discuss the electron deficient bonding in diborane molecule.

Mobility of free electrons in a conductor is

The total number of lone pairs of electrons in melamine

What happens to the free electrons when the conductor are connected to the battery ?

The lastly filled electron paired with the electron, which was already in the 3p_y orbital. Guess the name of the atom.

The products of bond breaking, shown below, are not stable, and cannot be isolated for prolonged study. Such species are referred to as reactive intermediate, and are belived to be transient intermediates in many reactions. The general structures and names of four such intermediates are, Charged Intermediates Uncharged Intermediates Carbocations (called carbonium ions in the older literature) are electrophiles and carbananions are nucleophiles. Carbenes have only a valence shell sextet of electrons and are therefore electron deficient. In this sense they are elecrophiles, but the non-bonding electron pair also gives carbenes nucleophilic character. As a rule, the electrophilic character dominates carbene reactivity. Carbon radicals have only seven valence electrons, and may be considered electron deficient, however, they do not in general bond to nucleophilic electron pair, so their chemistry exhibits differences from that of conventional electrophiles. Radical intermediates are often called free radicals. Intermediates are in general stabilised with conjugation, electron donating and electron with drawing groups. Which of the following is relatively an unstable intermediate compared to rest ?