The primary valency corresponds to

• coordination number

• charge on the complex

• oxidation number

• counter ions

The primary valency cannot be

• positive

• neutral

• positive or neutral

• negative

According to VB theory, the bonding between metal atom/ion and ligand is

• covalent pi bond

• coordinate covalent sigma bond

• covalent sigma bond

• coordinate covalent bond

An octahedral complex is formed when hybrid orbitals of the following type are involved

• sp3

• dsp2

• d2sp3

• dsp3

sp3 hybridisation leads to

• Tetrahedral shape

• Octahedral shape

• Hexagonal shape

• Trigonal bipyramid

The secondary valency are

• directional and ionisable

• directional and non ionisable

• non direstional and non ioisable

• non direstional and ioisable

VB theory failed to explain

• all the components of magnetic moment

• geometry

• spatial arrangement of ligands

• nature of the bond

According to werner theory , the geometry of CoCl3(NH3)6

• tetrahedral

• square planar

• octahedral

• trigonal planar

The type of hybridisation present in the above structure

• sp3

• sp

• dsp3

• d2sp3

low spin complex and high spin complex have the following hybridisation

• d2sp3 and sp3d2

• sp3d2 and d2sp3

• dsp3 and sp3d

• sp3d and dsp3