The grid below shows part of the periodic table. The letters do not represent theactual symbols of the elementsGH IFa. Selectthei. Element which has the largestatomicradius (4 marks)....................................................................................................................................ii. Mostreactivemetal (4 marks)....................................................................................................................................iii Mostreactivenon-metal (4 marks)....................................................................................................................................b. Show on the grid the position of the element J which form J 2- ions with electronicconfiguration2.8.8

Study the information in the table below and answer the questions that follow. Theletters do not represent the symbols of the elements.Element(C) Atomic number Melting pointL 11 97.8M 13 660N 14 1440Q 17 401R 19 63.7a) Write the electrons arrangement for the atom formed by elements and M andQ........................................................................................................................................................................................................................................................................b) Select an element whichisi) The most reactive non –metal...........................................................................................................................ii) A poor conductor ofelectricity...........................................................................................................................c) In which period of the periodic table does elements Rbelow.....................................................................................................................................d) Element R lodes its outermost electron more readily than I.Explain

Study the information given in the table below and answer the questions that follow.The letters do not represent the actual symbols of the elementsElement Atomic number Boiling point (K)S 3 1603T 13 2743U 16 718V 18 87W 19 1047(a) Select the elements, which belong to thesame(i) Group (1mark)....................................................................................................................................(ii) Period (1mark)....................................................................................................................................(b) Whichelement(i) Is in gaseous state at room temperature?Explain(Take room temperature tobe298K) (2marks)........................................................................................................................................................................................................................................................................(ii) Does notformoxide? (1mark)....................................................................................................................................(c) Write the(i) Formula of the nitrate ofelement T (1 mark)10....................................................................................................................................(ii) Equation for the reaction between elements SandU

Study the data in the table below and answer the questions that follow. The letters donot represent actual symbols of theelementsElement Atomic No. M.P. 0 (C) B.P. 0(C) Ionic radius (nm)A 11 98 890 0.095B 12 650 1110 0.065C 13 660 2470 0.050D 14 1410 2360 0.41E 15 44.2, 590 280 0.0340.212F 16 113119445 0.184G 17 -101 -35 0.181H 18 -189 -186(a)(i)Write electronic arrange for the atoms represented by letters B and F.............................................................................................................................................................................................................................................................................10(ii) State the nature of the oxides of the elements represented by B and F..............................................................................................................................................................................................................................................................................(b) Why does the element represented by letter E have two values of meltingpoint?............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(c) Explain the following observations in terms of structure andbonding(i) There is an increase in boiling point from A toC.................................................................................................................................................................................................................................................................................................................................................................................(ii) Element D has a high boilingpoint.................................................................................................................................................................................................................................................................................................................................................................................(iii) There is a decrease in boiling point E toH.....................................................................................................................................................................................................................................................................................................................................................................................................................(d) Explain the difference in ionic radius between elements represented by letters A andG............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................(e) Write the formulae and the electronic arrangement of the two ions E whose ion radiusare shown in thetable.............................................................................................................................................................................................................................................................................

Recall which part of the modern periodic table contains elements with similar properties.ColumnDiagonalRow

The Modern Periodic Table of Elements is arranged by