Analyzing the options
Option (A):
Boron in
[B(OH)4]− forms 4 sigma bonds thus it is
sp3 hybridised. Hence, it is correct match with option
(ii).
Option (B):
Aluminium in
[Al(H2O)]3+
The Electronic configuration of
Al is
1s2 2s2 2p6 3s2 3p1
Al loses its
3 valence electrons from the
3s and
3p-orbitals to become
Al3+ ion .
Now, it accepts
6 electron pairs from water molecules after undergoing
sp3d2 hybridization using it’s one s-orbital, three
p-orbitals and two
d-orbitals.
Thus,
Al undergo
sp3d2 hybridisation and correct match will be option
(iii).
Option (C):
Bonding of boron in
B2H6 (diborane):
Each
B atom uses
sp3 hybrid orbitals for bonding. Out of the four
sp3 hybrid orbitals on each
B atom, one is without an electron shown in broken lines.
The terminal
B−H bonds are normal
2-centre-
2- electron bonds but the two bridge bonds are
3-centre-
2-electron bonds. The
3-centre-
2-electron bridge bonds are also referred to as banana bonds.
Hence, due to
sp3 hybridisation of boron, the correct match will be option
(ii).
Option (D):
Carbon in Buckminsterfullerene:
C60 molecule has a shape like soccer ball and called Buckminsterfullerene. It contains
20 six- membered rings and
12 five membered rings.
A six membered ring is fused with six or five membered rings but a five membered ring can only fuse with six membered rings. All the carbon atoms are equal and they undergo
sp2 hybridisation.
Each carbon atom forms three sigma bonds with the other three carbon atoms. The remaining electron at each carbon is delocalised in molecular orbitals, which in turn give aromatic character to the molecule.
Hence, correct match is option
(i).
Option (E):
In
SiO4−4, Silicon atom is bonded to four oxygen atoms in tetrahedral fashion. Due to formation of
4 sigma bonds and no lone pair on the
Si central atom, it has
sp3 hybridisation.
Hence, correct match is option
(ii).
Option (F):
Germanium in
[GeCl6]2−
The Electronic configuration of
Ge=[Ar] 3d10 4s2 4p2 4d0\)
In complex
[GeCl6]2−
Ge have an oxidation state of
+4.
Electronic configuration of
Ge4+=[Ar] 3d10 4s0 4p0 4d0
Now,
6 Cl− ions can donate 6 lone pairs of electrons to
Ge4+ which gets accommodated in one
4s orbitals, three
4p orbitals and two
4d orbitals via forming
sp3d2 hybridisation.
Hence, correct match is option
(iii).
So, the correct match can be given as:
Column IColumn II(A)Boron in[B(OH)4]−(ii)sp3(B)Aluminium in[Al(H2O)6]3+(iii)sp3d2(C)Boron in[B2H6](ii)sp3(D)Carbon in Buckminsterfullerene(i)sp2(E)Silicon in[SiO4−4](ii)sp3(F)Germanium in[GeCl6]2−(iii)sp3d2