The electronic configuration of four particles A, B, C and D are 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?
(i) Element B is Magnesium atom as it has an atomic number 12.
(ii) Element C is Oxygen atom as its atomic number is 8.
(iii) Element D is Sodium ion (Na+) as its electronic configuration is 2,8.
(iv) Element A is Chloride ion (Cl-) as its electronic configuration is 2,8,8.
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