An element A from group 14 of the periodic table combines with an element B from group 16.

(i) What type of chemical bond is formed?

(ii) Give the formula of the compound formed.

An element X from group 2 reacts with element Y from group 16 of the periodic table.

(a)What is the formula of the compound formed?

(b) What is the nature of bond in the compound formed?

A metal X is in the first group of the periodic table. What will be the formula of its oxide?

An element X from group 2 of the periodic table reacts with an element Y from group 17 to from a compound.

(a) What is the nature of the compound formed.

(b) State whether the compound formed will conduct electricity or not.

(c) Give the formula of the compound formed.

(d) What is the valency of element X?

(e) How many electrons are there in the outermost shell of an atom of element Y?

The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):

(i)Select the letter which representsan alkali metal.

(ii) Select the letter which represents a noble gas.

(iii) Select the letter which represents a halogen.

(iv) What type of bond is formed between a and e?

(v) What type of bond is formed between d and e?