The atomic number of three elements A, B and C are 9, 10 and 13 respectively. Which of them will form a cation?
Question
Solution 1
The element that will form a cation is the one that tends to lose electrons to achieve a stable electron configuration.
Element A has an atomic number of 9, which means it has 9 electrons. The electron configuration is 2,7. It needs to gain 1 electron to achieve a stable configuration.
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