Ionic compounds have high melting points why

Asked by admin @ in Science viewed by 386 People

(a) Give reason for the following :

(i) Ionic compounds have high melting and boiling points.
(ii) Ionic compound are soluble in water.
(iii) Ionic compounds conduct elecincity in molten state.
(b) Show the formation of MgO by transfer of electrons.
CBSE Class X Science LA (5 Marks)

Answered by admin @


(a) (i) Ionic compounds have high melting and
boiling points. It is because of strong force of attraction between oppositely charged ions, therefore
high energy is required to break the metallic bonds between ions.


(ii) 
Ionic compounds are soluble in water because they form ions in aqueous
solutions.


(iii) tonic compounds conduct electricity in molten
state and in aqueous solution because ions carry current. The movement of ions
takes place towards oppositely charged electrode in electric field.







(b) Formation of MgO:
For this, open the attachment.


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