write electron configurations for elements that are identifiedby these atomic nos. a.15 b.12 c.9 d.18

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jeew-m | College Teacher | (Level 1) Educator Emeritus

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atomic number 15

`1S^2,2S^2,2P^6,3S^2,3P^3`

 

atomic number 12

`1S^2,2S^2,2P^6,3S^2`

 

atomic number 9

`1S^2,2S^2,2P^5`

 

atomic number 18

`1S^2,2S^2,2P^6,3S^2,3P^6`

Sources:

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