Element 'A' reacts with oxygen to form a compound `A_(2)O_(3)`. If 0.359 gram of 'A' react to give 0.559 gram of the compound, atomic weight of 'A' will be

Element X reacts with oxygen to form a compound, whose simplest formula is X_2O_3. If 0.359 g of X react to give 0.559 g of the compound, atomic weight of X is found to be

An element X reacts with chlorine to form a compound of formula XCl_(2) . Write the formulae of compounds which you expect to be formed when the element X combines with oxygen.

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be -

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be: