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JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Analyzing +4 | -1

Which of the following have the same number of electrons in outermost shell?

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Correct option: A

Elements with atomic number 30, 48, 80

Option A is correct because elements with atomic numbers 30 (Zn), 48 (Cd), and 80 (Hg) all belong to the same group (group 12) and have 2 electrons in their outermost shell.

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