September 2019 1 49 Report
Identificar a que elemento, grupo y periodo pertenecen las siguientes configuraciones,
a) 1s2, 2s2, 2p6
b) 1s2,2s2,2p5
c) 1s2,2s2,2p6,3s1
d) 1s2, 2s2,2p6,3s2
e) 1s2,2s1

ayudenme porfa ​

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