Consider the following elements : ""_(20) A, ""_(8) B, ""_(18) C, ""_(16) D, ""_(4) E, ""_(2) F Answer the following giving reasons : Which of the above elements you would expect to be (i) very stable. (ii) in Group 2 of the Periodic Table. (iii) in Group 16 of the Periodic Table. (iv) What type of bond will be formed when the element A reacts with B? Explain.

Consider the following elements : ""_(20) A, ""_(8) B, ""_(18) C, ""_

1.	Consider the following elements : ""_(20) A, ""_(8) B, ""_(18) C, ""_(16) D, ""_(4) E, ""_(2) F Answer the following giving reasons : Which of the above elements you would expect to be (i) very stable. (ii) in Group 2 of the Periodic Table. (iii) in Group 16 of the Periodic Table. (iv) What type of bond will be formed when the element A reacts with B? Explain.
Answer» Solution :(i) `""_(2) F and ""_(18) C `are very stable elements because they contain 2 (DUPLET) and 8 (OCTET) electrons in the outermost shell. (ii) Elements `""(4)_E and ""_(20) A ` are in Group 2 of the Periodic Table because E has the electronic configuration 2, 2 and A has electronic configuration 2, 8, 8, 2. Both have two electrons in the outermost shell. (iii) `""_(8) B and ""_(16)D` occupy Group 16 of the Periodic Table. Both contain 6 electrons in the outermost shell. (iv) A and B will REACT to FORM AB with an ionic bond. A will donate two electrons to B to form the compound.