Write the atomic number of the element present in the third period and – InterviewSolution

InterviewSolution

1.	Write the atomic number of the element present in the third period and seventeenthgroup of the periodic table.
Answer» Element belongs to 3rdperiodTherefore, n = 3Element belongs to 17thgroupTherefore, number of valence electrons = 7Outermost electronic configuration of element is 3s23p5Therefore, the atomic number of element is 17

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