Short Answer Type
Long Answer TypeWhat is meant by the diagonal relationship of elements? Discuss the diagonal relationship of beryllium with aluminium.
Or
Beryllium exhibits some similarities with aluminium. Point out three such properties.
Discuss the diagonal realtionship of Be and Al with regard to:
(i) action of alkali (ii) structure of chlorides.
Short Answer TypeGive any three points of similarities between beryllium and aluminium and two points of dissimilarities between beryllium and barium ?
How beryllium chloride is prepared? Give its two important properties
Preparation. It is prepared by heating beryllium oxide and carbon mixture in an atmosphere of chlorine. 
Properties:
1. It is covalent in nature and fumes strongly in the moist air due to hydrolysis. 
2. In the vapour phase, it exists as a dimer which dissociates into monomers at about 1200 K.
Long Answer TypeHow does magnesium occur in nature? How is magnesium obtained by electrolysis method ?
What happens when:
(i) magnesium is heated with water.
(ii) magnesium is heated in an atmosphere of carbon dioxide,
(iii) magnesium is treated with dilute sulphuric acid and
(iv) magnesium is treated with nitrogen?
Switch
