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What is Inert pair effect ? Explain in detail with examples... :]
Compare relative stability of O2+ and O2- using bond order?
Arrange Li2, Li2+ and Li2- in the order of increasing stability....URGENT ANSER NEEDED!!!!!!!!!!!!!!!!!
True / False :-
NO+ is more stable than N2+ ?
what are the limitations of valence bond theory?
Molecule possesing dipole moment is : a)CH4 , b)H2O , c)BF3 , d)CO2 ?
Why N2 is more stable than O2. Explain on the basis of Molecular Orbital Theory
Using VSEPR theory draw the structure of XeOF2 and ICl4-
The structure and hybridization of N(SiH3)3 is
1.Which of the following does not obey octet rule and why?
NO , PCl3 , SF4, SO2.
2.Calculate the bond order of B2+.
3.Compare realtive stability of N2 and N2+.
4. What is the hybridisation of central atom in PCl5 , NH4+ AND BF3 ?
find bond order and formal charge of SO4-2 and PO4-3
What is hydration energy ?
arramge in the increasing order of bond angle
NH3, NH4+, NH2-
NH3 has higher boiling point than PH3. Why?
WHAT IS HYBRIDISATION OF C2H2 WITH DIAGRAM
WHY IS KO2 PARAMAGNETIC????
molecular orbital of o2,
WHAT is the formal charge of CO3 ??
BF3 is non polar but NF3 is polar why?
what is the energy level diagram of N2 and F2?
write lewis structure of na2so4
Why the bond angle (H--N--H) in NH4+is greater than NH3?????
what is the oxidation number of sulphur in H2SO5 plz give explanation in detail
explain the hybridisation in c3h8.Draw shape of molecule
Write the MO configuration of the following species-
O2 , O2+ , O2- , O22-
Arrange them in order of their decreasing stabilities?
What is the limitation and advantage of hybridization ?
explain the structure of PCl5
suggest working models in chemistry
A molecular orbital gives the electron probability distribution around a group of nuclei in a molecule such as an atomic orbital that gives the electron probability distribution around a nucleus in an atom. I didn't understand. what does it mean?
Discuss the shape of SiCl4, AsF5, H2S, PH3 using VSEPR theory ?
Is HI a covalent compound or ionic compound?
Explain the geometry and hybridisation of [Ni(CN)4]2-????
HF is polar while F2 is nonpolar.Explain
DRAW THE STRUCTURE OF C2H4 C2H2 (ELECTRONIC DOT STRUCTURE
PCl5 exists but Ncl5 does not why?
Which out of H2O and H2S has higher boiling point and why ?
how to know whether compound is paramagnetic or diamagnetic if the compound is formed of more than 2 atoms like H20, co2,No2 , So2 ,NH4 etc tell me the rule
What are the postulates of kossel-lewis/electronic theory of valency??
explain y BeH2 molecule has zero dipole moment although the Be-H bonds are polar...?
In PO43- ION, THE FORMAL CHARGE ON EACH OXYGEN ATOM AND P-O BOND ORDER RESP. ARE
presence of a lone pair distorts the geomatry of covalent molecule. explain.
Write the molecular orbital configuration of N2 and N2+ . Also calculate their bond order?
In the formation of HF molecule , types of orbitals used by H and F atoms are respectively
s and p
s and sp3
s and s
s and sp and also answer why
plz explain me the lewis dot stucture of NF3 ,CO3 AND HNO3
why pz-pz bond is sigma bond but px-px, py-py px-py bonds are pi bonds ?
why KHF2 is known but KHCl2 is not known?
what is positive nd negative electron gain enthalpy
what is meaning of equilibrium distance
is boric acid a protic acid ,,,,,,,,explain me fast,,,,,i hav my xam on mondayyyyyy
use the M.O theory, explain why Be2 molecule does not exist?
For the reaction :-
AlCl3+ NaOH ----> Al(OH)3+ NaCl
If initially 1 mole of each reactant is taken then the number of moles of AlCl3remained after the xompletion of reaction is :
(D) None of these.
Explain the formation of H2 molecules on the basis of valence bond theory
On what factors do hydration energy & solubility depend ? Does the hydration energy increase with increase in solubility ?
what is lattice energy & how is it related to the stability of an ionic compound?
using hybridization,explain the shape of BF3 molecules?
In molecular orbital why the bonding orbital have lower energy than the antibonding orbital.....xplain
The molecular orbitals are formed due to linear combination of atomic orbitals where atomic orbitals are considered as an electron wave and the combination occurs as:
If ψAand ψBare the amplitudes of two atomic orbitals then, they combine by two ways:
1. Constructive interference: when both waves add together as, Φ = ψA+ ψB
2. Destructive interference: when two waves are subtracted as,Φ = ψA- ψB
Now, as their magnitudes are the square of amplitudes so,Φ2= (ψA+ ψB)2= ψA2+ ψB2+ 2ψAψB
While. second equation is ,Φ'2= (ψA- ψB)2= ψA2+ ψB2- 2ψAψB
Φ2 ψA2+ ψB2
Here, we see that, two new molecular orbitals formed where, constructive interference gives bonding MO and destructive interference gives antibonding MO.
The electron density is increased in bonding MO as the electrons are maximum found in bonded region while the probability is minimum in antibonding MO and so here the electron density is minimum.
So, antibonding MO has repulsion in atomic orbitals and so it requires much more energy to stabilize them and they are of minimum stability and higher energy.
But in case of bonding MO, the there is already attraction between the atomic orbitals and so they have lower energy and hence maximum stability.
Posted byShubhangini Kumari
Plz xplain as there is minimum electron density in antibonding MO then why , antibonding MO has repulsion in atomic orbitals also why there is attraction in bonding MO as electron density is maximum
Give reason why H2+ ions are more stable than H2- though they have the samebond order.
which has lowest bond angle?
AsCl3, SbCl3, PCl3 , NCl3 ( ANSWER=SbCl3) why???
NaCl gives a white precipitate with AgNO3 solution but CCl4 does not. Why?
Explain the resonance structures of CO2 & CO2-3 ?
How to find out the geometry of ClO4-
What are electron deficient compounds? Are BCl3 and SiCl4 electron deficient species?Explain.
the states of hybridization of boron and oxygen atoms in boric acid(H3BO3) ARE resp.
a...sp3 and sp2
b.. sp2 and sp3
c.. sp2 and sp2
d.. sp3 and sp3
Explain why NH3 is pyramidal but BF3 is trigonal planar in structure ???
sp2 hybridisation structure of C2H4????
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