Electronic configuration of a molecule and its correlation with molecular behavior:
The distribution of electrons amongst different molecular orbitals is termed as electronic configuration of a molecule. It can provide us very significant information about the molecules as demonstrated below.1. Stability of a molecule in requisites of a number of electrons in bonding and anti-bonding molecular orbitals:
From electronic configuration it is possible to determine the number of electrons in bonding molecular orbitals (Nb) and number of electrons in anti-bonding molecular orbitals (Na).(a) If Nb > Na, the molecule is stable:
This is obvious since in this case the influence of bonding electrons will be greater than the influence of anti-bonding electrons, resultant in a total force of attraction.
(b) If Nb < Na, the molecule is unstable:
This is again apparent since in this case the influence of anti-bonding electrons will be greater than the influence of bonding electrons, resultant in a total force of repulsion.
(c) If Nb = Na, the molecule is unstable:
This is since in this case the influence of bonding electrons will be equivalent to the influence of anti-bonding electrons resultant in no total force of attraction.2. Bond order and stability of a molecule or an ion:
The stability of a molecule or an ion can also be found out from the other parameter termed as bond order. Bond order might be stated as half the difference among the number of electrons in bonding molecular orbitals (Nb) and the number of electrons in anti-bonding molecular orbitals (Na) that is,
Bond Order = 1/2 (Nb - Na)
The resultant molecule or ion will be stable when Nb > Na that is, when bond order is positive. The resultant molecule or ion will be unstable when Nb ≤ Na that is, if bond order is negative or zero.3. Relative stability of molecules or ions in terms of bond order:
The stability of a molecule or an ion is directly proportional to the bond order. Therefore, a molecule with bond order 3 (example, N2) is more stable (that is, has a higher bond dissociation energy) than a molecule with bond order 2 (example, O2) or 1 (example, Li2).4. Nature of bond in conditions of bond order:
A chemical bond can be single, double or triple however can’t be a fraction; on the other hand bond order can be a fraction.5. Bond length in conditions of bond order:
Bond length is determined to be inversely proportional to bond order. Bigger the bond order, smaller the bond length and vice versa.
For illustration, the bond length in nitrogen molecule (i.e., bond order = 3) is shorter than in oxygen molecule (i.e., bond order = 2), that in turn is smaller than in hydrogen molecule (i.e., bond order = 1). Table: Bond order, Bond dissociation energy and bond length in N2, O2 & Li2 molecules:
6. Diamagnetic and paramagnetic behavior of the molecule:
If all the electrons in molecule are paired then the substance is diamagnetic in nature. On another hand, when the molecule has unpaired electrons, then it is paramagnetic in nature.
Latest technology based Chemistry Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Atomic Structure homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Atomic Structure, project ideas and tutorials. We provide email based Atomic Structure homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Atomic Structure. 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 Atomic Structure. 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.
Enhance your academic grades and success with Populations Problems Assignment Help service with 24/7 support at economical rates.
www.tutorsglobe.com free tutorials on role of system analyst, systems analysis skills, systems analyst as a professional, library professionals as system analysts.
Accounting policies are the conventions, principles and rules employed to ready the financial statements.
www.tutorsglobe.com offers optical activity homework help, optical activity assignment help, online tutoring assistance, organic chemistry solutions by online qualified tutor's help.
www.tutorsglobe.com offers Tabulation of Raw Data homework help, Tabulation of Raw Data assignment help, online tutoring assistance, geometry mathematics solutions by online qualified tutor's help.
Collenchyma usually takes place in the dicot stems in two or more than two layers below the epidermis.
tutorsglobe.com private cost and social cost assignment help-homework help by online cost concepts and categorization tutors
tutorsglobe.com international finance assignment help-homework help by online source of finance tutors
The Angiosperms tutorial all along with the key concepts of Common features of Angiosperms, Adaptive Features, Monocotyledoneae and Dicotyledoneae
tutorsglobe.com hypoglycemia assignment help-homework help by online insulin tutors
tutorsglobe.com structure of a mature ovum assignment help-homework help by online functioning of female reproductive system tutors
tutorsglobe.com electroencephalography assignment help-homework help by online cerebral cortex tutors
tutorsglobe.com uses of fluorine assignment help-homework help by online halogen family tutors
Financial Econometrics Assignment Help is a better option to grab higher academic grades with 24x7 support of professional tutors.
tutorsglobe.com significance of bragg’s equation assignment help-homework help by online braggs equation tutors
1959152
Questions Asked
3689
Tutors
1485067
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!