--%>
Assignment Help - homework help

  Formation of colored ions

Formation of colored ions:

Mostly transition metal compounds are colored in their solution or solid form. The color of transition metal ions is due to the presence of unpaired electrons in it and the energy gap among two energy levels in similar d-subshell being small. Therefore very small quantity of energy is needed for excitation of electrons from one energy level to another. The energy can be easily given by the visible light. The color observed corresponds to the complementary color of the light absorbed.

The color of some transition metal ions are specified in the table shown below:

358_colored ions d block.jpg

 

It might be noted that Cadmium, Zinc, and Mercury salts do not form any colored compounds since of the absence of vacant d orbitals to which electrons can be excited. Sc3+ ions are also colorless since of the absence of d-electrons.

 

Latest technology based Chemistry Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in D 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 D Block Elements, project ideas and tutorials. We provide email based D Block Elements homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in D 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 D 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.