Q3 / 160 · AP EAMCET 2018 (22 Apr Shift 1) · Chemistry

To which group and period does the element belong if the electronic configuration of an element in its -2 oxidation state is $1 s^2 2 s^2 2 p^6 3 s^2 3 p^6 ?$

  • Correct answer
    A
    period 3, group 16
  • B
    period 3, group 17
  • C
    period 4, group 16
  • D
    period 4, group 17

Solution

Electronic configuration $=1 s^2, 2 s^2, 2 p^6, 3 s^2, 3 p^6$ $=16$ electrons Sulphur $(Z=16)$ refer to group 16 and period 3 . Sulphur show -2 oxidation state.

Hence, the correct answer is option: 'A'.

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