Advertisements
Advertisements
Question
Bond angle in `PH_(4)^(+)` is higher than that in PH3. Why?
Advertisements
Solution 1
In PH3, P is sp3 hybridized. Three orbitals are involved in bonding with three hydrogen atoms and the fourth one contains a lone pair. As lone pair-bond pair repulsion is stronger than bond pair-bond pair repulsion, the tetrahedral shape associated with sp3 bonding is changed to pyramidal. PH3 combines with a proton to form `PH_4^(+)` in which the lone pair is absent. Due to the absence of lone pair in `PH_4^(+)`, there is no lone pair-bond pair repulsion. Hence, the bond angle in is higher than the bond angle in PH3
Solution 2
P in PH3 is sp3-hybridized with 3 bond pairs and one lone pair around P. Due to stronger lp-bp repulsions than bp-bp repulsions, tetrahedral angle decreases from 109°28′ to 93.6°. As a result, PH3 is pyramidal. In PH4+, there are 4 bp’s and no lone pair. As a result, there are only identical bp-bp repulsions so that PH4+ assumes tetrahedral geometry and the bond angle is 109°28′.Hence, bond angle of PH4+ > bond angle of PH3
RELATED QUESTIONS
Write balanced chemical equations for action of potassium permanganate on: Hydrogen
Pb(NO3)2 on heating gives a brown gas which undergoes dimerisation on cooling? Identify the gas
How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.
Give the resonating structure of N2O5.
Write balanced chemical equations for action of potassium permanganate on Warm conc. sulphuric acid
The statement true for \[\ce{N^-_3}\] is ____________.
Which of the following statements is not correct for nitrogen?
Pure nitrogen is prepared in the laboratory by heating a mixture of:
Which of the following oxides is neutral?
The bonds present in N2O5 are ____________.
Which of the following oxides of nitrogen is a coloured gas?
In which one of the following oxides of nitrogen, one nitrogen atom is not directly linked to oxygen?
A deep brown gas is formed by mixing two colourless gases which are:
Which of the following elements can be involved in pπ – dπ bonding?
Name three oxoacids of nitrogen. Write the disproportionation reaction of that oxoacid of nitrogen in which nitrogen is in +3 oxidation state.
On heating lead (II) nitrate gives a brown gas “A”. The gas “A” on cooling changes to colourless solid “B”. Solid “B” on heating with NO changes to a blue solid ‘C’. Identify ‘A’, ‘B’ and ‘C’ and also write reactions involved and draw the structures of ‘B’ and ‘C’.
HCl is added to following oxides. Which one would give H2O2
Which oxide of nitrogen is obtained on heating ammonium nitrate at 250°C?
