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?

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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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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?

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?