Moderate

Which of the following element will show electronic configuration of the outermost shell like ns2, np5?

Correct answer: B. Cl

  • A. C
  • B. Cl
  • C. S
  • D. Si

Explanation

The electronic configuration of the outermost shell like ns2 np5 corresponds to elements in Group 17 of the periodic table, also known as the halogens. The electronic configuration of chlorine is [Ne]3𝑠2 3𝑝5.

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Atomic structure covers the discovery of the proton, Planck's quantum theory, hydrogen emission spectra and the evidence for quantized energy levels. You will use quantum numbers to describe orbitals, distinguish s, p, d and f orbital shapes, and write electronic configurations, including the correct order of electron filling.

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