11 Chemistry The s-Block Elements - Set No : 5 Question No :4
Question No : 4
| Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in |
| a) | Exhibiting maximum covalency in compounds | b) | Forming polymeric hydrides |
| c) | Forming covalent halides | d) | Exhibiting amphoteric nature in their oxides |
Answer No : 4
(a)Be  has maximum covalency of 4 while  has maximum covalency of 6. |