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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.
oxygen does not form OF4 or OF6 whereas S forms SF4, SF6. why ?
why nitrogen exist as a gas and phosphorus exist a solid?
write the reaction of SO2 with acidified KMnO4 and write the product formed.
Br2 + F2 (excess) is ...............
What are p-pi - p-pi , p-pi - d-pi and d-pi - d-pi bonds??
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-
NCl3 and PCl3 gives different product on hydrolysis. why?
Why does ICl is more reactive than I2?
Why is NO paramagnetic in gaseous state but diamagnetic in solid and liquid state?
iodine forms I3 but flourine does not form F3
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?
what is covalecy? what is covalency of n2o5
what is meant by reducing character and oxidising character? what is oxidising agent and reducing agent?
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?
is BiF5 MOLECIULE STABLE OR NOT .EXPLAIN WHY?
why does iron dissolve in HCL to form FeCl2 and not FeCl3
h3po3 is diprotic acid
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 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 N-O bond in NO2- is shorter than the N-O bond NO3-. State the reason.
why is helium used in diving apparatus?
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."
Nitrogen does not form pentahalides due to non-availability of thed-orbitals in its valence shell plz explain
Give Electronic configration of S2+, S4+, S6+ .
NCl3 get hydrolysed whereas NF3 not
The perhalate ion with maximum oxidising power is
d. all have nearly same oxidising power
NF3 IS AN EXOTHERMIC COMPOUND WHEREAS NCl3 IS NOT WHY???
pcl5 is known but ncl5 is not known?
nh3 is good complexing agent
Why does Ammonia(NH3) acts as a ligand ?
SF6 is not easily hydrolysed whereas SF4 is easily hydrolysed...why...???
Among the halogen F2 is the strongest oxidising agent .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 are melting and boiling points of ammonia are higher than expected ?
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 is BiH3 the strongest reducing agent amongst all the hydrides of group 15 elements?
complete the reaction
why are pentahalides more covalent than trihalides?
why does acidic character decrease down the group?
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?
Why is SeO2 a solid, while SO2 and O3 are gases?
All the bonds in SF4 are not equivalent. Why ?
F2 is stronger oxidizing agent than cl2
H3PO2 and H3PO3 act as good reducing agents while H3PO4 does not.
Order of successive ionisation enthalpies: ΔiH1 < ΔiH2 < ΔiH3. why is 1st IE less than 2nd and 3rd. grp 15 elements have half filled p orbital so removal of 1st electron must require more energy than removal of progressive electrons. so 1st IE must be greater than 2nd and 3rd.
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?
Why melting point increases upto arsenic and decreases upto bismuth?
why nitrogen has more ionistaion enthalpy than oxygen???
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