|
What is diagonal relationship ? In what ways lithium shows similarities to magnesium in its ( chemical behaviour)?
|
|
0
|
1967
|
August 13, 2016
|
|
Why is LiF almost insoluble in water whereas Lid is soluble not only in water but also in acetone?
|
|
0
|
1151
|
August 13, 2016
|
|
Why are lithium salts commonly hydrated and those of other alkali ions usually anhydrous?
|
|
0
|
2683
|
August 13, 2016
|
|
When an alkali metal dissolves in liquid ammonia, die solution acquires different colours. Explain the reasons for this type of colour change
|
|
0
|
3452
|
August 13, 2016
|
|
Why are potassium and caesium rather than lithium used in photoelectric cells?
|
|
0
|
2782
|
August 13, 2016
|
|
Why caesium can be used in photo-electric cells while lithium cannot be?
|
|
0
|
2069
|
August 13, 2016
|
|
Why is sodium kept in kerosene oil?
|
|
0
|
845
|
August 13, 2016
|
|
Name three metal ions which play important role in performing several biological functions in the animal body
|
|
0
|
402
|
August 13, 2016
|
|
Predict giving reason the outcome of the reaction
|
|
1
|
487
|
August 13, 2016
|
|
Amongst alkali metals why is lithium regarded as most powerful reducing agent in aqeuous solution?
|
|
0
|
518
|
August 13, 2016
|
|
Why is the solution of an alkali metal in ammonia blue?
|
|
0
|
430
|
August 13, 2016
|
|
Out of LiOH, NaOH, KOH which is the strongest base?
|
|
0
|
2401
|
August 13, 2016
|
|
Why does lithium show anomalous behaviour?
|
|
0
|
1018
|
August 13, 2016
|
|
What is the reason that sodium reacts with water more vigrously than lithium?
|
|
0
|
434
|
August 13, 2016
|
|
Arrange the following in order of increasing covalent character MCI, MBr, MF, MI
|
|
0
|
2522
|
August 13, 2016
|
|
Amongst Li, Na, K, Rb, Cs, Fr which one has highest and which one has the lowest ionisation enthalpy?
|
|
0
|
861
|
August 13, 2016
|
|
Why group I elements have lowest ionisation enthalpy?
|
|
0
|
415
|
August 13, 2016
|
|
Why is oxidation state of Na and K always + 1?
|
|
0
|
912
|
August 13, 2016
|
|
Name the elements (alkali metals) which form superoxide when heated in excess of air
|
|
0
|
1734
|
August 13, 2016
|
|
What happens when sodium dissolve in liquid ammonia?
|
|
0
|
1963
|
August 13, 2016
|
|
Which one of the following alkali metals gives hydrated salts?
|
|
1
|
2984
|
August 13, 2016
|
|
Which of the alkali metal is having least melting point?
|
|
1
|
2245
|
August 13, 2016
|
|
Explain why is sodium less reactive than potassium?
|
|
0
|
4555
|
August 13, 2016
|
|
Find out the oxidation state of sodium in ${{Na}_{2}}$${{O}_{2}}$
|
|
0
|
1487
|
August 13, 2016
|
|
Why are alkali metals not found in nature?
|
|
0
|
1445
|
August 13, 2016
|