9.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.............................................................................................................................................................................................................................................................................
Question
9.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.............................................................................................................................................................................................................................................................................
Solution
The question you've asked is quite complex, but I'll do my best to answer it step by step.
(a)(i) The electronic arrangements for the atoms represented by letters B and F are as follows:
B (Atomic number 12) - The electronic configuration is 2, 8, 2. F (Atomic number 16) - The electronic configuration is 2, 8, 6.
(a)(ii) The nature of the oxides of the elements represented by B and F:
B forms basic oxides because it is a metal. F forms acidic oxides because it is a non-metal.
(b) The element represented by letter E has two values of melting point because it likely exists in two different allotropes. Each allotrope has a different structure, which leads to different melting points.
(c) The observations can be explained as follows:
(i) There is an increase in boiling point from A to C because the number of electrons increases, leading to stronger metallic bonds.
(ii) Element D has a high boiling point because it likely has a giant covalent structure, which requires a lot of energy to break.
(iii) There is a decrease in boiling point from E to H because the elements are moving from non-metals to noble gases, which have weak van der Waals forces.
(d) The difference in ionic radius between elements represented by letters A and G can be explained by the fact that A has fewer protons than G, so it can't pull the electrons in as closely, resulting in a larger ionic radius.
(e) The formulae and the electronic arrangement of the two ions E whose ion radius are shown in the table can't be determined without more information.
Similar Questions
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
(a) Study the information in the table below and answer the questions that follow. Theletters do not represent the actual symbols of theelements.Element Atomic number Melting pointofelementFormula ofchlorideMelting pointof chlorideG 11 98 GCI 801H 12 650 HCl 2 715J 14 1410 JCl 4 -70K 16 113 K 4 Cl 2 -80L 20 851 LCl 2 780(i) Which elements are metals? Giveareason (2marks)........................................................................................................................................................................................................................................................................(ii) Write the formula of the compound formed when element H reacts withelement(1 mark)....................................................................................................................................(iii) Explain why the melting point of J is higher than thatof K (2marks)............................................................................................................................................................................................................................................................................................................................................................................................................(iv) What is the oxidation state of J initschloride? (1mark)....................................................................................................................................(v) How doesthe:-Melting point of the fluoride of G compare with that of its chloride?10Explain (2marks)............................................................................................................................................................................................................................................................................................................................................................................................................-Reactivity of H and L with water compare? Giveanexplanation
The table shows the atomic structure of four elements.ElementNumber of electronsNumber of neutronsNumber of protonsElectron configurationW1112112, 8, 1X1516152, 8, 5Y1718172, 8, 7Z1822182, 8, 8Question promptWhich two elements can form an ionic compound?Question response areaSelect one optionW and ZW and YX and YY and Z
Atomic Names and Symbols1A 2A 3A 4A 5A 6A 7A 8A(1) (2) (13) (14) (15) (16) (17) (18)3B 4B 5B 6B 7B — 8B — 1B 2B (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) 1 H He2 Li Be B C N O F Ne3 Na Mg Al Si P S Cl Ar4 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr5 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe6 Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn7 Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Rg Uub — Uuq — — — —6 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 7 Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.