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This electron configuration represents Sr or Strontium. 2-8-18-7-3 represents Sr in the excited state; 2-8-18-8-2 represents Sr in the ground state.

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9y ago
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13y ago

2-8-7 is the electron configuration for Chlorine.

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8y ago

This element is bromine (Br): group 17, period 7.

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Q: What is the electron configuration of 2-8-18-7-3 for a neutral atom?
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