Name a non-metal which is lustrous and a metal which is liquid at the room temperature.

Write the chemical equations for the reactions taking place when:

(a) Magnesium ribbon is burnt in presence of air.

(b) Sodium metal catches fire in contact with water.

(c) Steam is passed over hot aluminium.

Compare the properties of a typical metal and a non-metal on the basis of the following:

i. Nature of the oxide formed by them

ii. Conductivity

A compound ‘X’ conducts electricity and is soluble in water. What kind of compound is X, ionic or covalent? Assign other two properties of compound X other than given in the question.

An alkali metal A gives a compound B (molecular mass=40) on reacting with water. The B gives a soluble compound C on treatment with aluminium oxide. Identify A,B, and C and give the reaction involved.