Answers

2014-12-08T08:19:06+05:30
Berryllium has a strong resistant layer of oxide which acts as aresistant due to which no reactions take place with berrylium even after contact with steam, water or red heat. whereas the reactivity of the other elemets increases as you go down the group.
1 5 1
2014-12-08T20:38:29+05:30
Beryllium is covalent & asits boiling point is low & melting point.
2 4 2