Advertisements
Advertisements
प्रश्न
Name an element from Group 2 which forms an amphoteric oxide and a water soluble sulphate.
Advertisements
उत्तर
Due to small size and somewhat high ionization enthalpy of Be, Be(OH)2 is amphoteric in nature, i.e., it reacts with both acids and bases. Further, due to small size, the hydration enthalpy of Be2+ ions is much higher than the lattice enthalpy of BeSO4. As a result, BeSO4 is highly soluble in water.
APPEARS IN
संबंधित प्रश्न
Discuss the general characteristics and gradation in properties of alkaline earth metals.
Beryllium and magnesium do not give colour to flame whereas other alkaline earth metals do so. Why?
The product obtained as a result of a reaction of nitrogen with CaC2 is ______.
Which of the following has the highest hydration energy
Assertion: Generally alkali and alkaline earth metals form superoxides.
Reason: There is a single bond between O and O in superoxides.
Discuss briefly the similarities between beryllium and aluminium.
Beryllium halides are covalent whereas magnesium halides are ionic why?
Alkaline earth metal (A), belongs to 3rd period reacts with oxygen and nitrogen to form compound (B) and (C) respectively. It undergoes metal displacement reaction with AgNO3 solution to form compound (D). Identify A, B, C and D.
Explain the important common features of Group 2 elements.
Why alkaline earth metals are harder than alkali metals?
When sodium is dissolved in liquid ammonia, a solution of deep blue colour is obtained. The colour of the solution is due to ______.
Discuss the trend of the following:
The solubility and the nature of oxides of Group 2 elements.
Alkaline earth metals show ______.
Given below are two statements:
Statement I: Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.
Statement II: Cuprous metaborate is obtained by heating boric anhydride and copper sulphate in a non-luminous flame.
In the light of the above statements, choose the most appropriate answer from the options given below.
MgBr2 and Mgl2 are soluble in acetone because of ______.
PbCl4 exists but PbBr4 and Pbl4 do not because of ______.
