Assignment Help - homework help

  Actinide Series

The Actinide Series (5f block elements):

In the year 1923 Neils Bohr postulated the survival of an actinide sequence analogous to the lanthanide series.

The fifteen elements from actinium to lawrencium comprise the actinide sequence of the periodic table.

General Properties of Actinide Series:

The general electronic configuration of actinides is [Rn] 5f0,1-14 6d0,1-2 7s2, here Rn stands for radon core.

Oxidation states:

These elements display the oxidation states of +2, +3, +4, +5 and +6. Out of these, +4 oxidation state is most general state.

Radii of M3+ and M4+ ions:

The ionic radius of actinide elements reduce steadily as we move all along the actinide sequence. The steady reduction in the ionic radius with raise in nuclear charge is termed as actinide contraction and is analogous to the lanthanide contraction.

Cause of actinide contraction:

Cause of actinide contraction is the deficient shielding by 5f-electrons. Since we proceed from one element to the another one in actinide series, the nuclear charge raises by +1 at each next element that is not compensated due to the poor shielding effect of 5f orbitals due to their more diffuse shape. Therefore as the atomic number rises, the inward pull experienced by 5f-electrons raise. Consequently steady reduction in size takes place in the actinide sequence.

 

Latest technology based Chemistry Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in F Block Elements homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for F Block Elements, project ideas and tutorials. We provide email based F Block Elements homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in F Block Elements. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Inorganic-Chemistry Homework Help and assignment help services. They use their experience, as they have solved thousands of the Chemistry assignments, which may help you to solve your complex issues of F Block Elements. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
Home | Company Overview | Services | Discover Q&A | Sitemap | Contact Us | T & C | Refund Policy | Copyright Policy | Blog | Q&A | Directory

©TutorsGlobe All rights reserved 2022-2023.