Which of the following will form anion?K,O,Na,Cl,Mg,FWrite the electronic configuration???

Sparsh is correct.

The atomic number of O, F and Cl  are 8, 9 and 17 respectively.

Their electronic configuration are

O   2,6    and it gains 2 electrons to form oxide anion, O2- with electronic configuration 2,8
F    2.7   and it gains one electron to form fluoride anion, F-  with electronic configuration  2,8

Cl    2.8,7   and it gains one electron to form chloride anion, Cl-  with electronic configuration  2,8,8
 

  • 5
cl, f and o as these are all non metallic in nature
  • -1
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