Class 12 Chemistry D and F Block Elements Applications of d- and f-Block elements

Applications of d- and f-Block elements

  • Iron and steels are used for making tools, utensils, vehicles, bridges and much more.

  

  • TiO for the pigment industry and MnO2 for use in dry battery cells.

  • Zn and Ni/Cd is also used for battery industry.
  • Elements of Group 11 called the coinage metals.

  • V2O5 catalyses the oxidation of SO2 in the manufacture ofsulphuric acid.
  • TiCl4 with A1(CH3)3 forms the basis of the Ziegler catalystsused to manufacture polyethylene (polythene).
  • Iron catalysts are used inthe Haber process for the production of ammonia from N2/H2 mixtures.
  • Nickel catalysts enable the hydrogenation of fats
  • Wackerprocess the oxidation of ethyne to ethanal is catalysed by PdCl2.
  • Nickel useful in the polymerisation of alkynes and other organiccompounds such as benzene.
  • The photographic industry relies on thespecial light-sensitive properties of AgBr.

Problem: Write down the electronic configuration of:

(i) Cr3+    (iii) Cu+    (v) Co2+    (vii) Mn2+ 

(ii) Pm3+  (iv) Ce4+  (vi) Lu2+   (viii) Th4+

Solution:

(i) Cr3+: 1s2 2s2 2p6 3s2 3p6 3d3

Or, [Ar]183d3

(ii) Pm3+: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d105s2 5p6 4f4

Or, [Xe]54 3d3

(iii) Cu+: 1s2 2s2 2p6 3s2 3p6 3d10

Or, [Ar]18 3d10

(iv) Ce4+: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6

Or, [Xe]54

(v) Co2+: 1s2 2s2 2p6 3s2 3p6 3d7

Or, [Ar]183d7

(vi) Lu2+: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d1

Or, [Xe]542f143d3

(vii) Mn2+: 1s2 2s2 2p6 3s2 3p6 3d5

Or, [Ar]18 3d5

 

 

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