Question

Valence bond theory explains the color of the coordination compounds.
(A) True
(B) False

Answer 1

Hint :We know that the strong and weak ligand was distinguished by CFT that is crystal field theory. They give us the cause and effect of d-d transitions. The magnetic properties can be determined from the structure which is given by VBT. This hypothesis basically centers on the arrangement of individual bonds from the nuclear orbitals of the participating atoms during the development of a particle.

Complete Step By Step Answer:
As indicated by the valence bond hypothesis, Electrons in a particle possess nuclear orbitals rather than atomic orbitals. The nuclear orbitals overlap the bond arrangement and the larger the overlap the more strong the bond would be. Colour of complexes depends upon the electronic transitions that are made by the electron in the d orbital, but the valence bond theory does not give any clear explanation of the colour exhibited by the complexes.
Instead the CFT clearly gives account for the colour shown by complexes by showing the d-d transition. So statement one is correct. The magnetic properties of transition metals can be predicted by the number of unpaired electrons present by Filling of electron in an orbital and hence can predict the magnetic property whether diamagnetic or paramagnetic. The VBT does not give quantitative behaviour it only provides us qualitative nature
Valence bond and atomic orbital speculations are utilized to clarify chemical bonding. Two molecules that have unpaired electrons in their orbitals can overlap to offer ascent to a synthetic bond. A sigma bond structures when two nuclear orbitals overlap between the nuclei of two particles (otherwise called the internuclear axis).
Therefore correct answer is Option B, i.e. False.

Note :
Note that VBT valence bond theory assumes that the bond formed between metal and ligand is a polar covalent bond. Ligand is a species which tends to donate electrons to the metal and the metal has D orbitals in which the metals accept electrons, hence a polar covalent bond is formed.