1.

Asseriton (A) : covalent bonds are stronger than ionic bonds . Reson (R) :covalant bonds are stronger than ionic bonds .

Answer»

if both (A) and ® are correct , and ® is correct explanartion of (A
if both (A) and® are correct , but ® is nmot the correct EXPLANATION of
if (A) is correct , but ® is incorrect.
if both (A) and ® are icorrect .

Solution :Assertion is correct since higher melting POINTS of convalent crystals are DUE to network strucute. Correct (R): convalent bonds are weaker than ionic bonds.


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