Explicaê

01

Os elementos X, Y e Z apresentam as seguintes configurações eletrônicas:

X          1s² 2s² 2p6 3s¹

Y          1s² 2s² 2p6 3s² 3p5

Z          1s² 2s² 2p6

A respeito desses elementos, pode-se afirmar que


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