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The elements with the same valence electrons and form the same type of ions
(a) 168O2311Na
(b) 2018Ar2019K
(c)145N2713AL
(d)2311Na2019K
Correct Answer: (d) 2311Na 2019K.
Explanation: The elements with the same valence electrons and form the same type of ions are sodium and potassium as both form cations by donating their outermost electrons and both have 1 valence electron.
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