An element ‘X’ belongs to the fourth period and fifteenth group of the Periodic Table. Which one of — Periodic Table and Periodicity Chemistry Question
Question
An element ‘X’ belongs to the fourth period and fifteenth group of the Periodic Table. Which one of the following is true regarding the outer electronic configuration of ‘X’. It has
Answer: C
💡 Solution & Explanation
Given, element X belongs to the fourth period and fifteenth group, thus the outermost shell of element X is 4 and the number of outermost electrons present is 5. PERIODIC PROPERTIES 34 Thus, the electronic configuration of element X will be 2 2 6 2 6 2 10 3 1s 2s 2p 3s 3p 4s 3d 4p . Therefore, it has completely filled ‘s’ orbital and half-filled ‘p’ orbitals.
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