Table Q2-21 indicates the electrons in the first four atomic electron shells for selected elements. On the basis of the information in the chart and what you know about atomic structure, which elements will form ions with a net charge of +1 in solution?

Table Q2-21 indicates the electrons in the first four atomic electron shells for selected elements. On the basis of the information in the chart and what you know about atomic structure, which elements will form ions with a net charge of +1 in solution?



(a) carbon, sulfur
(b) helium, neon
(c) sodium, potassium
(d) magnesium, calcium


Answer: C


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