Question

Cons4C
me formation of the molecule
and clar Structure
dagason and Her and predict
species will be more stable.
cowale covalent, explain in tems of
greco wote the leweis structure
of these loonwide.
Woup 4 Group 17
bords are rigid and directional. They can orient
* lcgespace. Due to the possibility of different
aangements of covalent bonds in space, a covalent
mot here somerism
D G D E (monoatomic)
oudeus attraction electron electron repulsion and
e a greater overlapping of atomic orbitals
hondatals are oriented at an angle of 120° and lie in
ey Long Anster) Type Questions
hasa ionic bond and how is it formed? Illustrate your
are by atleast two examples What are the factors which
get the formation of an ionic bond? Mention the main
261
62. Give reason for the following:
Bond order in N2 is 3 whereas it is 2.5 in NO.
Hints and Answers
38. The compounds of the type C2H2X2 possess a CC double
bond. Atoms cannot rotate around a double bond.
Therefore, following two orientations of atoms in space are
possible
H-C-X
H-C-X
Brons
The isomer in which similar atoms are on the same side of
double bond is called a cis isomer while that in which similar
atoms are on the opposite sides is called a trans isomer and the
compound is said to show cis-trans isomerism.
40. (v) The hydrogen bonding present in o-nitrophenol is
intramolecular. Intramolecular hydrogen bonding does not
associate molecules. This is why o-nitrophenol has a low boiling
point
44. The process of approximating the correct molecular orbitals by
combining the atomic orbitals of the combining atoms is called
linear combination of atomic orbitals.
51. The bond order for Hez is zero. Hence, the molecule cannot
exist.
55. Hz <H2 < Hz (for details, see the text).
56. Hz and Hz
58. 03 <02 <02 < 03: 8.0.1, 1
2,25
des
e
onderstics of ionic compounds.
in calent bond. Explain the formation of Cl2, NH3, O2
and le molecules. How does the multiplicity of bonds affect
rezond length and bond energy?
whatsott rule is followed by all molecules? What type
aceptions have been observed to this rule ? Illustrate your
answer examples
wadeyou understand by partial ionic character in a covalent
Send Give at least three examples of the compounds containing
atalyonic calent bonds.
s what s dipole moment? How is it helpful in deciding the
penetry of a molecule
& Scian wye
me dole moment of CO2 is zero although it contains
erronegative oxygen atoms.
8th Band NH3 are the molecules of the type AB; but
ther dipole moments are not equal.
Opole moment of H20 is much higher than that of H2S.
samce energy and how can it be calculated with the
for-aber cycle ilustrate with an example.
I was variable electrovalency and why do elements show it?
(Carrying 5 marks each)
11. Give some examples which illustrate the failure of the octet rule.
What explanations have been suggested to explain the failure of
the octet rule?
12. Explain with examples the cause of partial ionic character in
covalent bonds.
13. Why do certain ionic compounds exhibit partial covalent
character? Explain with examples.
14. What do you understand by polarisation? State and explain
Fajan's rules.
15. Define resonance and resonance energy. What are the conditions
for resonance? Explain the structures of NO3 and Což ions on
its basis.
16. State and explain the main postulates of VSEPR theory. How is
this theory helpful in explaining the geometry of the following
molecules ? BeF2, NH3, H20, PC15 and SF-
17. State and explain the main postulates of Valence bond theory.
How does this theory explain the shapes of the following
molecules?
HF, N2, H2S and PH3.
18. What do you understand by overlapping of orbitals? Explain the
overlapping of s and p-orbitals. What are sigma and pi-bonds
and what is the main difference between them?
19. What do you understand by hybridisation? Explain with
examples the various types of hybridisation involving s and p
orbitals.
20. What is a coordinate covalent bond and how is it formed? Write
the Lewis structures of the following molecules :
Oz, SO2, SO3, H2SO4 and NHA
as you understand by covalency, variable covalency and
animum ency? Explain the variable covalencies exhibited
shorts and chlorine.
temportant properties of ionic and covalent compounds.​

Answer 1

Answer:

I don't understand sorry