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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. M r B o h r w a n t s t o k n o w. 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.

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Q u a n t u m N u m b e r s

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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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