|
What are electron-deficient compounds?
|
|
0
|
4010
|
August 13, 2016
|
|
Explain why is there a phenomenal decrease in ionisation enthalpy from carbon to silicon
|
|
0
|
816
|
August 13, 2016
|
|
Mention one industrial application of silicones
|
|
0
|
544
|
August 13, 2016
|
|
What happens when CO is passed over heated nickel?
|
|
0
|
2260
|
August 13, 2016
|
|
If the starting material for the manufacture of silicones is write the structure of the product formed
|
|
0
|
846
|
August 13, 2016
|
|
Suggest a reason as to why CO is poisonous
|
|
0
|
6375
|
August 13, 2016
|
|
Why carbon shows maximum catenation in group 14 elements?
|
|
0
|
2392
|
August 13, 2016
|
|
Elements of group 14:
|
|
1
|
748
|
August 13, 2016
|
|
Thermodynamically the most stable form of carbon is:
|
|
1
|
11455
|
August 13, 2016
|
|
When metal X is treated with sodium hydroxide, a white predpitate
|
|
1
|
1361
|
August 13, 2016
|
|
Write balanced equations for:
|
|
1
|
1221
|
August 13, 2016
|
|
What happens when:
|
|
1
|
2431
|
August 13, 2016
|
|
Explain structure of diborane
|
|
0
|
4742
|
August 13, 2016
|
|
Describe the shapes of B${{F}_{3}}$ and B${{H}_{4}}^{-}$. Assign the hybridization of boron in these species
|
|
0
|
916
|
August 13, 2016
|
|
Aluminium trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF
|
|
1
|
953
|
August 13, 2016
|
|
Write reactions to justify amphoteric nature of aluminium
|
|
0
|
9287
|
August 13, 2016
|
|
Explain what happens when boric acid is heated?
|
|
0
|
8383
|
August 13, 2016
|
|
Complete and balance the following equations :
|
|
0
|
782
|
August 13, 2016
|
|
How would you explain the lower atomic radius of Ga as compared to Al?
|
|
0
|
4046
|
August 13, 2016
|
|
If B-Cl bond has a dipole moment, explain why B$C{{l}_{3}}$ molecule has zero dipole moment
|
|
0
|
1289
|
August 13, 2016
|
|
Why does boron triflouride behave as a Lewis acid?
|
|
0
|
2786
|
August 13, 2016
|
|
What do you mean by the terms insert pair effect & Ionization Enthalpy?
|
|
0
|
1080
|
August 13, 2016
|
|
What is the chemical formula of borazole or bo- razine ? Why is it called inorganic benzene?
|
|
0
|
994
|
August 13, 2016
|
|
What happens when aluminium metal is dipped in cone, nitric acid?
|
|
0
|
780
|
August 13, 2016
|
|
The type of hybridization of boron in diborane is : (a) sp, (b) s${{p}^{2}}$, (c) s${{p}^{3}}$, (d) ds${{p}^{2}}$
|
|
0
|
512
|
August 13, 2016
|
|
Boric acid is polymeric due to:
|
|
1
|
3042
|
August 13, 2016
|
|
Is boric acid is a protonic acid ? Explain
|
|
0
|
3042
|
August 13, 2016
|
|
Gold has much higher first ionisation energy than boron, yet gold is a metal while boron is a non- metal. Explain
|
|
0
|
965
|
August 13, 2016
|
|
Why boron halides do not exist as dimers whereas Al$C{{l}_{3}}$ exists as $A{{l}_{2}}$$C{{l}_{6}}$
|
|
0
|
1743
|
August 13, 2016
|
|
P$\pi $-p$\pi $ back bonding occurs in halides of boron and not in those of aluminium. Explain
|
|
0
|
1937
|
August 13, 2016
|