Sample Activity of Integration – Periodic Table  Revision Questions

1. a ) State what is meant by the following terms :

 ( i ) Atomic number .

( ii ) Mass number .

b ) The electronic structure of some selected elements are :

 ( i ) Which element belongs to group II of the Periodic Table ? Give a reason for your answer .

( ii ) Which elements belong to the same group in the Periodic Table ?

 (iii ) Which of the elements has the highest proton number ?

(vi) State how you arrived at the answer .

( iv ) Draw the electron structure of element E

 ( v ) Write the formula of the most likely ion formed by element B

 ( vi ) State two physical properties of element A that differentiates it from element E.

2. Figure 3.7 is an outline of part of the Periodic Table with some elements shown .

Figure 3.7 : An outline of part of the Periodic Table

From your knowledge of periodic trends in the properties of elements , answer the following questions :

a ) Which element would have an electronic structure in which the outermost shell :

( i ) has 2 electrons ?              ( ii ) is fully filled ?

b ) Cu is used for making coins while Cs or Ba cannot be used for this purpose . Why not ?

c ) Element X ( not indicated on the table above ) has the electronic structure 2 , 8 , 6 .

 ( i) Locate the position of X on the Periodic Table ( its group and period ) .

( ii ) Is X a metal or non – metal ?

 (iii) Name one element (not shown on the table above) which you expect to have chemical properties similar to those of X.