Give reasons for the following:
(i) Most metals conduct electricity well.
(ii) The reaction of iron (III) oxide (Fe2O3) with heated aluminium is used to join cracked machine parts. (Delhi 2019)
a) (i) Due to their free electrons. (ii) Formation of molten iron.
b) (i) Due to their high density. (ii) Formation of iron sulfate.
c) (i) Due to their high melting points. (ii) Formation of iron oxide.
d) (i) Due to their malleability. (ii) Formation of aluminum oxide.
