What does this mean:
sp?orbital has 50% ?s? character. Thus, an?sp?hybridised carbon is more electronegative than an?sp2?(33% s character) or?sp3?(25% s-character) hybridised carbon.
Hybridisation influences the bond length and bond enthalpy
And this also
Dear Student,
Electronegativity, symbol χ, is defined as the tendency of an atom to attract a shared pair of electrons towards itself. Now, as s-character increases, the distance between the nucleus and the electron in the orbital decreases, thus increasing the attraction between the electrons shared. So, the tendency of the atom to attract electron increases and hence, the electronegativity. So, electronegativity of sp, sp2 and sp3 carbon are 3.1, 2.6 and 2.3 respectively.
Hybridisation also influences bond length and bond enthalpy. sp C-C bond is shortest with highest bond enthalpy while sp2 C-C bond is longer than sp C-C bond with bond enthalpy less than sp C-C bond while sp3 C-C bond is the longest with least bond enthalpy.
In methane, carbon has 4 surrounding atoms and no lone pair, so hybridisation is sp3.
In ethene , carbon has 3 surrounding atoms and no lone pair, so hybridisation is sp2.
In ethyne, carbon has 2 surrounding atoms and no lone pair, so hybridisation is sp.
Regards
Electronegativity, symbol χ, is defined as the tendency of an atom to attract a shared pair of electrons towards itself. Now, as s-character increases, the distance between the nucleus and the electron in the orbital decreases, thus increasing the attraction between the electrons shared. So, the tendency of the atom to attract electron increases and hence, the electronegativity. So, electronegativity of sp, sp2 and sp3 carbon are 3.1, 2.6 and 2.3 respectively.
Hybridisation also influences bond length and bond enthalpy. sp C-C bond is shortest with highest bond enthalpy while sp2 C-C bond is longer than sp C-C bond with bond enthalpy less than sp C-C bond while sp3 C-C bond is the longest with least bond enthalpy.
In methane, carbon has 4 surrounding atoms and no lone pair, so hybridisation is sp3.
In ethene , carbon has 3 surrounding atoms and no lone pair, so hybridisation is sp2.
In ethyne, carbon has 2 surrounding atoms and no lone pair, so hybridisation is sp.
Regards