An element E combines with oxygen to form an oxide `E_(2)O` which is a good conductor of electricity. Give the following information:
(i) How many electrons will be present in the valence shell of the element E ?
(ii) Write the formula of the compound formed when the element E combines with chlorine.

Write the chemical formula of the compound formed by combining element S with P.

An element X combines with oxygen to form an oxide XO . This oxide is electrically conducting. (a) How many electrons would be there in the outermost shell of the element X ? (b) To which group of the periodic table does the element X belong? (c) Write the formula of the compound formed when X reacts with chlorine.

The valency of an element A is 3 and that of element B is 2. Write the formula of the compound formed by the combination of A and B.

An element X burns in oxygen to form an electrovalent compound XO. What is the formula of compounds formed if this element is allowed to combine with chlorine

A compound XH is formed by the combination of an element X with hydrogen. Find the valencv of the element. State the formula of the compound formed by the combination of (a) X with nitrogen (b) X with oxygen.

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 E is trivalent. Write the formula of its (i) chloride (ii) oxide.