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show how so2 bleaching temporary but cl2 bleach permanently?
oxygen does not form OF4 or OF6 whereas S forms SF4, SF6. why ?
how to find the bond order in NO2- and NO3- . pls explain.
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-
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??
nh3 is good complexing agent
NCl3 and PCl3 gives different product on hydrolysis. why?
pcl5 is known but ncl5 is not known?
Why does ICl is more reactive than I2?
Why is NO paramagnetic in gaseous state but diamagnetic in solid and liquid state?
why so2 can act as both oxidizing as well as reducing agent?
ClF3 molecule has a T-shaped structure and not a trigonal planar one.
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?
why does acidic character decrease down the group?
what is covalecy? what is covalency of n2o5
Why SF4 is highly reactive and SF6 highly inert ?
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?
why does iron dissolve in HCL to form FeCl2 and not FeCl3
Thermal stability order of HX is- HF>HCl>HBr>HI [But the order should be HF>HI>HBr>HCl, due vanderwall forces in HI, HBr(due to large size)]. Can you explin me please why this has happened?
h3po3 is diprotic acid
why is NH3 is a stronger base than PH3
ii) Phosphorus is treated with concentrated nitric acid.
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)
iodine forms I3 but flourine does not form F3
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.
what is meant by reducing character and oxidising character? what is oxidising agent and reducing agent?
the N-O bond in NO2- is shorter than the N-O bond NO3-. State the reason.
Kindly explain this that why they disproportionate in acidic medium.
"All oxidation states from +1 to + 4 of nitrogen tend to disproportionate in acid solution."
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
Br2 + F2 (excess) is ...............
NF3 IS AN EXOTHERMIC COMPOUND WHEREAS NCl3 IS NOT WHY???
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
SF6 is not easily hydrolysed whereas SF4 is easily hydrolysed...why...???
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????
what is the order of melting and boiling points of group 15 elements.explain it with reasoning
why do noble gas form compounds with oxygen and flourine only?
why pcl5 is more covalent then pcl3 ?
Why is BiH3 the strongest reducing agent amongst all the hydrides of group 15 elements?
Give Electronic configration of S2+, S4+, S6+ .
why are pentahalides more covalent than trihalides?
Explain the trend
NCl3> PCl3 > AsCl3 > SbCl3 > BiCl3..on the account of d hydrolysis..
thkyu for ny help..!! :))
what is p pie p pie and d pie p pie bond?
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 ?
show the structures of XX3, XX5 and XX7- bent T shape, sq pyramidal, pentagonal bipyramidal
F2 is stronger oxidizing agent than cl2
H3PO2 and H3PO3 act as good reducing agents while H3PO4 does not.
PCl5 is co valent in nature in vapour phase but ionic in solid phase???? why?
why is H2S is less acidic than H2Te?
structure of H2S2O3 ,H2S2O4, H2S2O5, H2S2O6, H2S3O6, H2S4O6, H2S506
what i meant by ppi ppi ' dpi dpi and dpi ppi bond....???pls xplain
why SF6 exists but OF6 does not?
y is N2 inert at room temp. ?
why nitrogen has more ionistaion enthalpy than oxygen???
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