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Mastering Quantum Numbers in Atomic Structure | Dive Into Electron Configuration & Energy Levels

Learn about the key quantum numbers used to describe electron properties in atoms. Explore energy levels, sublevels, orbitals, and electron configurations. Understand the rules governing electron distribution within the atom. Mastering quantum numbers is essential in understanding atomic structure and behavior.

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Mastering Quantum Numbers in Atomic Structure | Dive Into Electron Configuration & Energy Levels

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  1. Q u a n t u m N u m b e r s M r B o h r w a n t s t o k n o w

  2. Q u a n t u m N u m b e r s Q u a n t u m n u m b e r s a r e u s e d t o d e s c r i b e t h e e l e c t r o n s i n a n a t o m .

  3. P r i n c i p a l Q u a n t u m N u m b e r - n • D e s c r i b e s t h e e n e r g y l e v e l . • E n e r g y l e v e l s 1 t o 7. • T h e m a x i m u m n u m b e r o f e l e c t r o n s i n n i s 2 n 2 .

  4. S e c o n d Q u a n t u m N u m b e r - l • D e s c r i b e s t h e s u b l e v e l i n n . • s - p - d - f s u b l e v e l s • E a c h e n e r g y l e v e l h a s n s u b l e v e l s .

  5. S e c o n d Q u a n t u m N u m b e r - l S u b l e v e l s o f d i f f e r e n t e n e r g y l e v e l s m a y h a v e o v e r l a p p i n g e n e r g i e s . T h i s i s s h o w n o n t h e P e r i o d i c T a b l e .

  6. T h i r d Q u a n t u m N u m b e r - m • D e s c r i b e s t h e o r b i t a l w i t h i n a s u b l e v e l . • s h a s 1 o r b i t a l p h a s 3 o r b i t a l s d h a s 5 o r b i t a l s f h a s 7 o r b i t a l s • W h a t i n d i c a t e s o r b i t a l s o n t h e P e r i o d i c T a b l e ?

  7. T h i r d Q u a n t u m N u m b e r - m • O r b i t a l s m a y c o n t a i n 1 o r 2 e l e c t r o n s . • m a l s o d e s c r i b e s t h e d i r e c t i o n i n s p a c e . • P o s s i b l e d i r e c t i o n s a r e - 1 t o + 1 .

  8. F o u r t h Q u a n t u m N u m b e r - s • D e s c r i b e s t h e s p i n o f t h e e l e c t r o n . • E l e c t r o n s i n t h e s a m e o r b i t a l m u s t h a v e o p p o s i t e s p i n s . • P o s s i b l e s p i n s a r e c l o c k w i s e , + 1 / 2 , a n d c o u n t e r c l o c k w i s e , - 1 / 2 .

  9. P a u l i E x c l u s i o n P r i n c i p l e N o t w o e l e c t r o n s i n a n a t o m h a v e t h e s a m e s e t o f f o u r q u a n t u m n u m b e r s .

  10. E l e c t r o n C o n f i g u r a t i o n • 1s2 2s2 2p6 3s2 3p5 • T h e l a r g e # i s t h e e l e c t r o n e n e r g y l e v e l . • T h e s m a l l l e t t e r i s t h e s u b l e v e l . • T h e s u p e r s c r i p t i s t h e n u m b e r o f e l e c t o n s i n t h e s u b l e v e l . • R e a d t h i s f r o m t h e T a b l e .

  11. E l e c t r o n C o n f i g u r a t i o n • 1s2 2s2 2p6 3s2 3p6 4s2 3d3 • 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d9 • W r i t e t h e e - c o n f. f o r B r o m i n e . • W r i t e t h e e - c o n f. f o r L a n t h a n u m .

  12. H u n d ‘ s R u l e E l e c t r o n s w i l l e n t e r e m p t y o r b i t a l s o f e q u a l e n e r g y w h e n t h e y a r e a v a i l a b l e .

  13. He 1 st Ionization Energy 24 22 20 18 16 14 12 10 8 6 4 2 E l e c t r o n V o l t s Ne F Ar N C P O H Be Cl Mg S B Si Al Na Li 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Atomic Number

  14. M r . S c h r o e d i n g e r h a s l o s t h i s c a t !

  15. E n d Q u a n t u m N u m b e r s

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