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The coordination number of barium ions (Ba2+) in barium fluoride (BaF2) is 8. What must be the coordination number of fluoride ions?
- a)2
- b)4
- c)8
- d)6
Correct answer is option 'B'. Can you explain this answer?
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The coordination number of barium ions (Ba2+) in barium fluoride (BaF...
Answer:
Coordination Number:
The coordination number is the number of ions or atoms immediately surrounding a central ion or atom in a crystal lattice. It is defined as the number of nearest neighbors of a central ion in a crystal.
Coordination Number of Barium Ions in BaF2:
The coordination number of barium ions (Ba2+) in BaF2 is 8. It means that each barium ion is surrounded by eight fluoride ions in a cubic arrangement.
Coordination Number of Fluoride Ions in BaF2:
To determine the coordination number of fluoride ions (F-) in BaF2, we need to consider the number of barium ions surrounding each fluoride ion. Since each barium ion has a coordination number of 8, each fluoride ion is surrounded by 8 barium ions.
Therefore, the coordination number of fluoride ions in BaF2 is equal to the number of barium ions surrounding each fluoride ion, which is 8.
Correct Answer:
Option (B) 4 is incorrect because the coordination number of fluoride ions in BaF2 is not determined by their own arrangement, but by the arrangement of barium ions around them.
Option (C) 8 is incorrect because it represents the coordination number of barium ions in BaF2, not the fluoride ions.
Option (D) 6 is incorrect because it does not fit the coordination number of either barium or fluoride ions in BaF2.
Therefore, the correct answer is option (B) 4.
Coordination Number:
The coordination number is the number of ions or atoms immediately surrounding a central ion or atom in a crystal lattice. It is defined as the number of nearest neighbors of a central ion in a crystal.
Coordination Number of Barium Ions in BaF2:
The coordination number of barium ions (Ba2+) in BaF2 is 8. It means that each barium ion is surrounded by eight fluoride ions in a cubic arrangement.
Coordination Number of Fluoride Ions in BaF2:
To determine the coordination number of fluoride ions (F-) in BaF2, we need to consider the number of barium ions surrounding each fluoride ion. Since each barium ion has a coordination number of 8, each fluoride ion is surrounded by 8 barium ions.
Therefore, the coordination number of fluoride ions in BaF2 is equal to the number of barium ions surrounding each fluoride ion, which is 8.
Correct Answer:
Option (B) 4 is incorrect because the coordination number of fluoride ions in BaF2 is not determined by their own arrangement, but by the arrangement of barium ions around them.
Option (C) 8 is incorrect because it represents the coordination number of barium ions in BaF2, not the fluoride ions.
Option (D) 6 is incorrect because it does not fit the coordination number of either barium or fluoride ions in BaF2.
Therefore, the correct answer is option (B) 4.
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The coordination number of barium ions (Ba2+) in barium fluoride (BaF...
The coordination number of barium ions tells us that it is surrounded by eight fluoride ions (charge 8 x (–1) = –8). In order to balance out the eight negative charges, we need four barium ions (charge 4 x (+2) = +8). Hence, the coordination number of the fluoride ions must be 4.
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The coordination number of barium ions (Ba2+) in barium fluoride (BaF2) is 8. What must be the coordination number of fluoride ions?a)2b)4c)8d)6Correct answer is option 'B'. Can you explain this answer?
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