d-Block elements

         A transition element may be defined as an element whose atom in the ground state or ion in common oxidation state has incomplete sub-shell, posses electron 1 to 9. It is called transition element due to fact that it is lying between most electropositive (s-block) and most electronegative (p-block) elements and represent a transition from them. The ordinary electronic configuration of these element is (n-1)^{1 to 10} ns^{0 to 2}.

         The definition of transition metal excludes Zn, Cd and Hg because they have complete d- orbital. Their common oxidation state is Zn⁺⁺, Cd⁺⁺, Hg⁺⁺. They also do not show the characteristics of transition element. Element of group 3 (Sc, Y, La and Ac) and group 12 (Zn, Cd, Hg) are called non typical transition element.

Table: First transition or 3d series :

                 Table: Second transition or 4d-series :

                 Table: Third transition or 5d-series :

         Table: Fourth transition or 6d-series :

         Elements marked with asterisk have anomalous configurations. These can be attributed to factors such as nuclear-electron and electron-electron forces and stability of half filled and full filled orbital.

         All of the transition elements are d block elements but all d block elements are not the transition elements.

Email based Chemistry assignment help - homework help at Expertsmind

Are you searching chemistry expert for help with d - Block Elements questions?  d - Block Elements topic is not easier to learn without external help?  We at www.expertsmind.com offer finest service of Chemistry assignment help and chemistry homework help. Live tutors are available for 24x7 hours helping students in their d - Block Elements related problems. We provide step by step d - Block Elements question's answers with 100% plagiarism free content. We prepare quality content and notes for d - Block Elements topic under chemistry theory and study material. These are avail for subscribed users and they can get advantages anytime.

Why Expertsmind for assignment help

1. Higher degree holder and experienced experts network
2. Punctuality and responsibility of work
3. Quality solution with 100% plagiarism free answers
4. Time on Delivery
5. Privacy of information and details
6. Excellence in solving chemistry queries in excels and word format.
7. Best tutoring assistance 24x7 hours