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8 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are allowed values for l given n |
From n-1 down to 0 |
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Given quantum number l, what are allowed values for ml? |
+l to -l |
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What all simbols in this equation mean: En=-((Z^2) *Rh)/n^2 |
En = energy of the orbital with principal quantum number n Z =nuclear charge Rh =Rydberg constant which can take value of 2.180×10^-18 J 1312 Kj/mol 13.61 eV |
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What is quantum number l associated with? |
Number of angular nodes ( nodal planes) |
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1.How to calculate total number of angular and radial nodes? 2. Total number of radial nodes? |
1. n-1 2. n-1-l |
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How many angular nodes and radial nodes for 4p orbital? |
1 angular node (p =1) and 2 radial nodes (n-1-l) |
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Why is actual orbital energy of 1s in He much higher than calculated from equation : En=-((Z^2) *Rh)/n^2 |
Effective nuclear charge (Zeff) is different from Z due to electron electron repulsion |
Think of repulsion |
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If orbitals of the same principal quantum number are degenerate, why is 2s filled before 2p? |
If you look at the radial distribution function graph, there's more 2s electron density inside the 1s orbital than 2p, therefore it's more penetrating to the nucleus, therefore it experiences greater effective nuclear charge |
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