Home Random Page


CATEGORIES:

BiologyChemistryConstructionCultureEcologyEconomyElectronicsFinanceGeographyHistoryInformaticsLawMathematicsMechanicsMedicineOtherPedagogyPhilosophyPhysicsPolicyPsychologySociologySportTourism






Figure 2. Scheme of Electron orbital

 

Motion of electrons around nucleus is described by energy and structure of atomic orbital. State of electron is described by values of 4 quantum figures (Tables 3, 4).

 

Table 3. Names and physical content of quantum figures

Names Symbol What’s determined? Possible values
Main (Principal) N, n Orbital energy (main energy level) Algebraic integers from 0 to ∞ (infinity)
Secondary (Azimutal) L Orbital form (energy sub-level) Algebraic integers from 0 to n-1
Magnetic ml Spatial orientation of orbital From –l to +l (ml=2l+1)
Spin ms Own magnetic moment of electrons + ½ and - ½

 

Table 4. Schematic description of atomic orbital

l ml Quantity of orbitals Schematic imagination
s
p -1 0 +1
d -2 –1 0 +1 +2
f -3 –2 –1 0 +1 +2 +3

 

Example: To show a p-orbital:

l=1, ml= -1; 0; +1;

p-orbital has 3 variants of space orientation:

 

 

 

 

Figure 3. Spatial orientation of p-orbitals

 


Date: 2015-01-12; view: 975


<== previous page | next page ==>
Theories of atomic structure | Distributions of electrons in atoms on energy levels and sub-levels may be presented in the form of electronic formulas.
doclecture.net - lectures - 2014-2024 year. Copyright infringement or personal data (0.006 sec.)