A metal combines with a non-metal by the transfer of electrons to form a compound Y.
(i) state the type of bonds in Y.
(ii). What can you say about its melting point and boiling point?
(iii) Will it be a good conductor of electricity?
(iv). Will it dissolve in an organic solvent or not?

Two non-metals combine with each other by the sharing of electrons to form a compound X. (a). What type of chemical bond is present in X? (b). State whether X will have a high melting point or low melting point. (c). Will it be a good conductor of electricity or not? (d). Will it dissolve in an organic solvent or not?

Write one example each of : (i) a metal having low melting point and a metal having high melting point. (ii) a metal which is a poor conductor of electricity and a non-metal which is a good conductor of electricity.

If the x and y co-ordinates of a point are equal, then what can you say about the position of the point.

What is methane? Draw its electron dot structure. Name the type of bonds formed in this compound. Why are such compounds: (i) poor conductors of electricity? and (ii) have low melting and boiling points? What happens when this compound burns in oxygen.

In ionic solids, the oppositelycharged ions are closely packed in space and have strong electrostatic forces of attraction. These compounds have high melting and boiling points and are also proop conductors of electricity in the solid state. (i) Why are ionic solids poor conductors of electricity ? (ii) What happens to electrical conductivity when these are dissoved in water ? (iii) What is the value associated with it ?

In ionic solids, the oppositely charged ions are closely packed in space and have strong electrostatic forces of attraction. These compound have high melting and boiling points and are poor conductors of electricity in the solid state. (i) Why are ionic solids poor conductros of electricity ? (ii) What happens to electrical conductivity when these are dissolved in water ?