When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from
Nitrogen is liberated by the thermal decomposition of - [IIT-1991]
There is no S – S bond in - [IIT-1991]
The type of hybrid orbitals used by chlorine atom in ion. [IIT-1992]
Although PF5, PCl5 and PBr5 are known, the pentahalides of nitrogen have not been observed
Phosphorus has lower electronegativity than nitrogen. [IIT-1994]
In P4O10 each P atom is linked with............O atoms -
Which one of the following species is not a pseudohalide ?
Which of the following statements is correct for CsBr3 ? [IIT-1996]
Hydrolysis of one mole of peroxodisulphuric acid produces– [IIT-1996]
KF combines with HF to form KHF2. The compound contains the species : [IIT-1996]
White phosphorus (P4) has - [IIT-1998]
In Compound of type ECl3, where E = B, P As or Bi, the angles Cl – E – Cl for different E are in the order [IIT-1999]
On heating ammonium dichromate, the gas evolved is [IIT-1999]
One mole of calcium phosphide on reaction with excess of water gives- [IIT-1999]
The oxidation numbers of sulphur in S8, S2F2, H2S, respectively, are → [IIT-1999]
Ammonia can be dried by - [IIT-2000]
The number of P – O – P bonds in cyclic metaphosphoric acid is - [IIT-2000]
According to the above structure, there are three P-O-P bonds.
Hence A is the correct answer.
Amongst H2O, H2S, H2Se and H2Te, the one with the highest boiling point is [IIT-2000]
The number of S – S bonds in sulphur trioxide trimer (S3O9) is – [IIT- 2001]
Read the following statement and explanation and answer as per the option given below : [IIT-2001]
Statement-I : F atom has a less negative electron gain enthalpy affinity than Cl atom.
Statement-II : Additional electrons are repelled more effectively by 3 p electrons in Cl atom than by 2p electron in F atom
The set with correct order of acidity is [IIT- 2001]
The reaction 3 CIO_(aq ) → (aq) + 2 Cl_ (aq) is an example of [IIT-2001]
H3PO4 and H3PO3 is - [IIT-2003]
The acid having O–O bond is- [IIT-2004]
Which phosphorus is thermodynamically most stable ? [IIT-2005]