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show how so2 bleaching temporary but cl2 bleach permanently?
how to find the bond order in NO2- and NO3- . pls explain.
why nitrogen exist as a gas and phosphorus exist a solid?
write the reaction of SO2 with acidified KMnO4 and write the product formed.
What are p-pi - p-pi , p-pi - d-pi and d-pi - d-pi bonds??
NCl3 and PCl3 gives different product on hydrolysis. why?
Br2 + F2 (excess) is ...............
Why does ICl is more reactive than I2?
show the structures of XX3, XX5 and XX7- bent T shape, sq pyramidal, pentagonal bipyramidal
Why is NO paramagnetic in gaseous state but diamagnetic in solid and liquid state?
Trihalides of Nitrogen are lewis bases
Trihalides of P , Sb , As , Bi are lewis acids?
Explain the trend :
i)NF3 < NCl3 < NBr3 < NI3 ..in accordance with Lewis Base Strength
ii) PF3 > PCl3 > PBr3 > PI3 ...in accordance with the Lewis Acid Strength
why so2 can act as both oxidizing as well as reducing agent?
ii) Phosphorus is treated with concentrated nitric acid.
How to balance the chemical equation:
NaOH (hot and conc.) + Cl2 -------> NaCl + NaClO3+H2O
Ka2 is very less than Ka1 for H2SO4 in water..y?
what is covalecy? what is covalency of n2o5
Electron gain enthalpy of oxygen is less than sulphur's due to its compact nature (it will suffer interelectronic repulsion), but why does EGE become less negative after sulphur ? (Down the group, atomic size increases, so how can size be attributed to EGE in this case?) if it is not size, then what is the deciding factor?
Give Electronic configration of S2+, S4+, S6+ .
why does iron dissolve in HCL to form FeCl2 and not FeCl3
oxygen does not form OF4 or OF6 whereas S forms SF4, SF6. why ?
h3po3 is diprotic acid
why is NH3 is a stronger base than PH3
Why out of all the noble gases, only Xenon can form compounds?
(The answer is not because its 1st IE is similar to that of oxygen)
My Chemistry practicals and Viva are on 4/2/13 and 5/2/13.Please provide some help on how to prepare for them because they are also very important.
The relative stabilities of N2, N2+ and N2- are
1. N2> N2+=N2-
2. N2= N2+>N2-
3. N2< N2+=N2-
4. N2= N2+<N2-
what is meant by reducing character and oxidising character? what is oxidising agent and reducing agent?
why iS NH3 more stable than BiH3 ?
the N-O bond in NO2- is shorter than the N-O bond NO3-. State the reason.
can you please tell me the covalence of nitrogen in n2o, NO, n2o3,no2,n2o4 with structures...
why is helium used in diving apparatus?
Nitrogen does not form pentahalides due to non-availability of thed-orbitals in its valence shell plz explain
NCl3 get hydrolysed whereas NF3 not
Fluorine and chlorine reacts with water but bromine and iodine are sparingly soluble in water .., what is the reason for such behaviour??
NF3 IS AN EXOTHERMIC COMPOUND WHEREAS NCl3 IS NOT WHY???
why does acidic character decrease down the group?
nh3 is good complexing agent
SF6 is not easily hydrolysed whereas SF4 is easily hydrolysed...why...???
iodine forms I3 but flourine does not form F3
Why does reducing property of dioxide decreases from SO2 to TeO2 and SO2 is reducing while TeO2 is an oxidisng agent.
what is holmes signal
PH3 has lower boiling point than NH3.explain.
why aniline does not under go friedel crafts rxn????
why do noble gas form compounds with oxygen and flourine only?
why pcl5 is more covalent then pcl3 ?
Why the stability order is :
Why is BiH3 the strongest reducing agent amongst all the hydrides of group 15 elements?
NO2 gas on cooling becomes colourless.
why are pentahalides more covalent than trihalides?
what is p pie p pie and d pie p pie bond?
1.What is "super halogen"? Why it is called so?Write its reaction with dilute sodium hydroxide.
2.What is Photosentization?Give an example.
hw 2 determine the basicity of-H3PO3 and H3PO4
Why iodine is more soluble in potassium iodide than in water?
All the bonds in SF4 are not equivalent. Why ?
draw the structure of HCLO2
F2 is stronger oxidizing agent than cl2
why does iodine exhibit metallic character?
H3PO2 and H3PO3 act as good reducing agents while H3PO4 does not.
structure of H2S2O3 ,H2S2O4, H2S2O5, H2S2O6, H2S3O6, H2S4O6, H2S506
why moist sulphur dioxide behaves as a reducing agent?
why is H2S is less acidic than H2Te?
what i meant by ppi ppi ' dpi dpi and dpi ppi bond....???pls xplain
why SF6 exists but OF6 does not?
why nitrogen has more ionistaion enthalpy than oxygen???
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