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Chemistry, 17.01.2021 05:30 yssbammy

Teniendo en cuenta las configuraciones electrónicas de los siguientes elementos, indicar cuál es el

número atómico de cada uno.

a- 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1

b- 1s 2 2s 2 2p 6 3s 2 3p 4

c- 1s 1

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