QQuestion
The electronic configuration of Na and Cl atoms in the compound NaCl is
(a) Na – 2, 8, 8 : Cl – 2, 8
(b) Na – 2, 8, 7 : Cl – 2, 8, 1
(c) Na – 2, 8, 1 : Cl – 2, 8, 7
(d) Na – 2, 8, : Cl – 2, 8, 8
✓Answer
(c) Na – 2, 8, 1 : Cl – 2, 8, 7
Explanation
Sodium (Na) has an electron configuration of 2, 8, 1, and chlorine (Cl) has an electron configuration of 2, 8, 7. In NaCl, Na loses one electron and Cl gains one electron to form a stable ionic bond.
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