Q68 of 400 Page 171

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 ?

(i) The type of bonds in Y is ionic.

(ii) It has a high melting and boiling point.


(iii) Yes it will be a good conductor of electricity.


(iv) No it will not dissolve in an organic solvent.



More from this chapter

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67 Will it be a good conductor of electricity or not? 67 Will it dissolve in an organic solvent or not? 69 The electronic configurations of three elements X, Y and Z are as follows:

X 2, 4


y 2, 7


z 2, 1


(a) Which two elements will combine to form an ionic compound?


(b) Which two elements will react to form a covalent compound ? Give reasons for your choice.

 70 An element A has 4 valence electrons in its atom whereas element B has only one valence electron in its atom. The compound formed by A and B does not conduct electricity. What is the nature of chemical bond in the compound formed ? Give its electron-dot structure.