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21 February, 20:23

Which has the least stable configuration?

NaCl

H2O

A single atom of Chlorine

A single atom of Argon

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Answers (1)
  1. 21 February, 22:23
    0
    Answer is: a single atom of chlorine.

    Chlorine has electron configuration: ₁₇Cl 1s²2s²2p⁶3s²3p⁵.

    According to his electron configuration, chlorine needs one electron to achive noble gas configuration (most stable because valence shell is filled).

    NaCl, H ₂O and Ar have stable electron configuration.
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