Electron configuration notation

  • Thread starter Larrytsai
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  • #1
Larrytsai
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right in full notation, and core

Full
Ca 2+ =
1s2 2s2 2p6 3s2 3p4

Core
Ca 2+ = [Ar] 4s2 - what happens when the 4s2 cancells out?
 

Answers and Replies

  • #2
GCT
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Your full notation is wrong.

I'm not quite certain what your second question is in regards to.
 
  • #3
kuahji
394
2
right in full notation, and core

Full
Ca 2+ =
1s2 2s2 2p6 3s2 3p4

Core
Ca 2+ = [Ar] 4s2 - what happens when the 4s2 cancells out?

Ca = [Ar] 4s2

If you have the element S2- you're electron configuration will be [Ar], while the element S is just [Ne] 3s2 3p4.
 
  • #4
Larrytsai
228
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Your full notation is wrong.

I'm not quite certain what your second question is in regards to.

hmm. that's the thing, the positive ion throws me off... I am supposed to remove 2 electrons in this order P -> S -> D so originally i would have 2+ more on the last shell

Second question I am supposed to write in Core Notation.
 
  • #5
GCT
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Your supposed to remove the electron from the highest occupied electron orbital which is the 4s2 orbital - what would you have as a result?

Core notation refers to the noble gas notation - it's nothing complicated once you figure out the first part the second should be made apparent.
 

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