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Question & Answer Forum

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Rajan Raman answered 4 year(s) , 5 month(s) ago

Compare the stabilities of O2 , O2-,O22- .

Ans: The stabilities of these can be best explained using Molecular orbital theory.
 
(i)                            Formation Oxygen molecule:
Electronic configuration of oxygen atom-1s...

Asked by Abhiram

Oct 29

  • 3 Answers
  • 4 Likes
  • 87116 Views
Syeda answered 1 year(s) , 10 month(s) ago

More stable among O2+ and O2-

Answer.

O2+ is more stable than O2-.Because According to molecular orbital theory O2+ has 15 electrons &it has one electron

...

Asked by Prasad

May 19

  • 2 Answers
  • 12 Likes
  • 72243 Views
Syeda answered 1 year(s) , 10 month(s) ago

why H2O is liquid and H2S is gas at room temperature?

In H2O,there is hydrogen bonding but in H2S there is no hydrogen bonding as Oxygen is more electronegative than sulphur

Asked by Ambati

May 31

  • 4 Answers
  • 6 Likes
  • 23654 Views
SRAVANKUMAR answered 4 year(s) , 1 month(s) ago

Shape of NF3 is pyramidal while the shape of BF3 is triangular planar

In NF 3  -The central atom Nitrogen undergoes SP 3  hybridization and there is one lone pair on Nitrogen atom. There exists repulsion force between lone pair and bond pair of electrons i...

Asked by Prasad

May 28

  • 2 Answers
  • 2 Likes
  • 16601 Views
Satyanarayana answered 4 year(s) , 10 month(s) ago

He2 molecule does not exists

Ans: Electronic configuration of He atom – 1s2

According Linear combination of atomic orbitals the He2 molecule electronic configuration is – σ1s2 σ*1s

...

Asked by Prasad

May 28

  • 1 Answer
  • 1 Like
  • 16519 Views
Swathi answered 4 year(s) , 11 month(s) ago

which has more bond dissociation energy&why. O2+ or O2 ?

O 2 + has more bond dissociation energy than O 2. Because the bond order in O 2 is 2 where as in O 2 + is 2.5.If bond order is more...

Asked by Ambati

May 9

  • 1 Answer
  • 0 Like
  • 15043 Views
Satyanarayana answered 4 year(s) ago

Shape of the PH3 molecule

Ans:

According to the VSEPR theory, every atom in a molecule will adopt geometry such that the repulsion between the valence electrons in the atoms is minimal. And the electron pairs prefer to occup

...

Asked by Sanalkumar

Mar 22

  • 2 Answers
  • 1 Like
  • 8949 Views
Swathi answered 4 year(s) , 6 month(s) ago

Hybrisation of central atom in XeF4

The central atom in XeF4 is Xenon. It undergoes sp 3d 2
The electronic configuration of Xenon atom in ground state is 5s 2  5p 6 5d 0
...

Asked by Sunny

Sep 16

  • 1 Answer
  • 1 Like
  • 8641 Views
Swathi answered 3 year(s) , 11 month(s) ago

Boiling point of p-nitro phenol is more than O- nitro phenol. Why?

Ortho nitophenol shows intramolecular hydrogen bonding, Whereas para nitro phenol shows inter moleculr hydrogen bonding.
In intermolecular hydrogen bonding association of molecules take place, but in int...

Asked by P Murali

May 4

  • 1 Answer
  • 0 Like
  • 8217 Views
Satyanarayana answered 4 year(s) , 10 month(s) ago

LiI is more covalent than LiF

Ans:
According to Fajan’s rule “with the increase in size of anion the covalent character in a molecule increases”. With the increase in size of the anion the electron cloud density shifted to center,

...

Asked by Prasad

May 19

  • 1 Answer
  • 1 Like
  • 7571 Views
Swathi answered 4 year(s) , 6 month(s) ago

SALIENT FEATURES OF VSEPR THEORY

According to the VSEPR theory, every atom in a molecule will adopt geometry such that the repulsion between the valence electrons in the atoms is minimal. And the electron pairs prefer to occupy maximum distanc...

Asked by Vinaya

Sep 21

  • 1 Answer
  • 0 Like
  • 7102 Views
Swathi answered 3 year(s) , 11 month(s) ago

Why is NH3 is a liquid and PH3 a gas?

NH3  is a liquid at room temperature while PH3  is a gas. This is because in  NH3 the molecules are associated to each other through intermolecular hydrogen bonds whe

...

Asked by P Murali

May 5

  • 1 Answer
  • 0 Like
  • 6836 Views
Satyanarayana answered 4 year(s) , 10 month(s) ago

Sigma and pi- bonds are present in Benzene

Ans: Structure of Benzene:

In Benzene there are 6- σ bonds between Carbon atoms and 6-σ bonds between Carbon and Hydrogen atoms. And 3 – π bonds between Carbon atoms.
Therefore...

Asked by Prasad

May 28

  • 1 Answer
  • 0 Like
  • 6270 Views
Satyanarayana answered 3 year(s) , 10 month(s) ago

Whch of the NH3 and NF3 has higher dipole moment and why?

Ans:
NH 3 has more dipole moment than NF 3.

Asked by P Murali

May 4

  • 1 Answer
  • 0 Like
  • 5359 Views
Swathi answered 3 year(s) , 11 month(s) ago

Explain partial ionic character in covalent bond?

When two atoms with different electro-negativities combine to form a covalent bond, the electron density between atoms is shared in such a way that it is displaced more towards the more electronegative atom.

...

Asked by P Murali

May 4

  • 1 Answer
  • 0 Like
  • 4606 Views
Dinesh answered 4 year(s) , 10 month(s) ago

NaCl is a bad conductor of electricity in solid state

nacl is salt and salt r bad condustors 

Asked by Prasad

May 28

  • 1 Answer
  • 0 Like
  • 2694 Views
Swathi answered 3 year(s) , 10 month(s) ago

Which is more polar HF or HCl and why?

HF is more polar than HCl.
Reason

Fluorine is more electronegative than chlorine. Hence, The polarity is maximum in HF.

Asked by P Murali

May 4

  • 2 Answers
  • 0 Like
  • 2515 Views
Satyanarayana answered 3 year(s) ago

Explain why noble gases does not exist as diatomic species with suitable examples

Ans: Noble gases does not exist in diatomic in nature. From the molecular orbital theory it can best understood.
By taking example of Helium (noble gas)

Ex: Formation of Helium (He₂) molecul

...

Asked by Manoj

Apr 3

  • 2 Answers
  • 0 Like
  • 2029 Views
Aman answered 4 year(s) , 4 month(s) ago

Hydrogen bond does not exist in HCl

Same as answered by Satyanarayana

Asked by Prasad

May 19

  • 2 Answers
  • 1 Like
  • 1910 Views
Swathi answered 3 year(s) , 10 month(s) ago

When sodium hydride is electrolyzed; hydrogen gas is liberated at which electrode?

When sodium hydride is electrolyzed; hydrogen gas is liberated at anode
NaH ↔ Na + + H -
At anode
H - -1 e -→ H
H + H = H 2<...

Asked by Adithyan

May 4

  • 1 Answer
  • 0 Like
  • 1737 Views
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