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2014-08-24T20:37:18+05:30

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The arrangements of electrons in the orbit of an atom is called electronic configuration.
eg; magnesium has 12 electrons .its configuration is
1s^{2} 2 s^{2} 2 p^{2} 3 s^{2} 
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2014-08-24T20:51:43+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Electronic Configuration is the mode of arrangement of electrons in their orbits or shells.
Example: Sodium =[2,8,1]
Which means first shell of sodium contains 2 electrons.
Second shell of sodium contains 8 electrons
third shell of sodium contains 1 electron.
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