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The Electronic Configurations of Four Particles A, B, C and D Given Below: A 2, 8, 8 B 2, 8, 2 C 2, 6 D 2, 8 Which Electronic Configuration Represents: (I) Magnesium Atom? (Ii) Oxygen Atom? (Iii) Sodium Ion (Iv) Chloride Ion? - CBSE Class 10 - Science

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Question

The electronic configurations of four particles A, B, C and D given below:

A 2, 8, 8
B 2, 8, 2
C 2, 6
D 2, 8

Which electronic configuration represents:
(i) magnesium atom?
(ii) oxygen atom?
(iii) sodium ion
(iv) chloride ion?

Solution

(i) Electronic configuration of particle B represents magnesium atom because its atomic number is 12.

(ii) Electronic configuration of particle C represents oxygen atom because its atomic number is 8.

(iii) Electronic configuration of particle D represents sodium ion. Atomic number of sodium is 11 and it loses one electron to stabilise and forms sodium ion containing 10 electrons.

(iv) Electronic configuration of particle A represents chloride ion. Atomic number of Chlorine is 17 and it gains one electron to stabilise and forms chloride ion containing 18 electrons.

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Solution The Electronic Configurations of Four Particles A, B, C and D Given Below: A 2, 8, 8 B 2, 8, 2 C 2, 6 D 2, 8 Which Electronic Configuration Represents: (I) Magnesium Atom? (Ii) Oxygen Atom? (Iii) Sodium Ion (Iv) Chloride Ion? Concept: Metal and Non Metals Questions.
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