FAQ IN INORGANIC CHEMISTRY[1]

Nitrogen is one of the most abundant element on earth but plants are deficient of it..Explain?

Answer
Because it requires a high energy to break the
 bond present in the atom which will be available for plant use...

Why is it that valence electrons is considered in determining the geometry of a compound?

Answer
The valence electron pair surrounding an atom repels each other and therefore adopt an arrangement that minimizes repulsion,thus determine the geometry..
   
How does lone pair of electron affect
the molecular geometry of a molecule?

Answer
Because they have a greater repulsive effect than bonding pairs causing them to seperate more and  thus makes molecular geometry different..they occupy more space ,the greater the repulsion,the higher the distortion and the lesser the bond angle..

Why is it that the bond angle in formaldehyde is 118 while that of ethene is 121.3 and that formaldehyde has a trigonar planar geometry and ethene has a planar geometery..

Answer
Double bonds take up more space around carbon atoms than single bonds because of their greater electron density which repels the other bonding electrons..


Why is it that Ammonia has a trigonal planar geometry and water has a bent shape

Answer
Ammonia has it because one of the positions in its molecules is filled by a lone pair of electron,water has a bent shape because of greater repulsive effect which arises from lone pair of electrons..


Why is the bond angle of  oxygen difluoride [F2O] lower than that of water[H20]

Answer
Because there are two electronegative elements in F2O

Why is crystal field theory appropriate for coordination compounds and what are the demerits..

Answer
Because of the presence of ligands in most coordination complexes but it does not explain colour and structure of complexes..

What is the condition by which ligand form bond with metal?

Answer
Metals must have available sub-orbitals of suitable energy that is available for bonding and ligand must have a specific ionization potential of electrons..


What are the properties of inner and outer orbital complex

Answer
inner orbital complexes have a LOW SPIN, LOW ENERGY BECAUSE IT HAS THE LOWEST POSSIBLE WAY OF BONDING WITH ELECTRONS, HIGHER STABILITY, IT IS THE ONE MOSTLY INVOLVED IN HYBRIDIZATION, FORMS STRONG LIGANDS, LOW VALUE OF Δ [MAGNITUDE OF CRYSTAL FIELD SPLITTING]. CONTAINS THE MOST NO OF PAIRED ELECTRONS WHILE OUTER ORBITAL COMPLEXES PROPERTIES ARE OTHERWISE OF INNER..

Sp3d2 and d2sp3 are both octahedral but the sp3d2 is less stable..Explain?

Answer
The D shell of d2sp3 has low energy and a low spin i.e d2sp3 is an inner orbital complex..

Why is copper and zinc referred to as a pseudo-transitional elements

Answer
They have a zero stabilization energy and also a d10 configurations..

Why does chlorine form a high spin complex and cyanide a low spin complex

Answer
CL is a weak ligand and small splitting of the energy is observed and it would be more favourable energetically to occupy the eg level...CN is a strong ligand,large splitting of energy level occurs resulting in large value of  Δ thus uses less energy to fill t2g orbitals resulting in pairing..