NEET Exam > NEET Questions > The unit cell of a binary alloy composed of A...
Start Learning for Free
The unit cell of a binary alloy composed of A and B metals has a CCP structure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:
- a)AB6
- b)AB4
- c)AB8
- d)A6B24
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
The unit cell of a binary alloy composed of A and B metals has a CCPst...
Corner atoms in a unit cell have a contributions = 1/8 each
Face centred atoms have a contribution of = 1/2 each
Total No. of atoms of A in ccp = (1/8) x(8-2) = (1/8) x 6 = 3/4 atoms
Total no. of atoms of B atoms = (1/2)x 6=3 atoms
Therefor molecular formula is A3/4B3 or AB4
Face centred atoms have a contribution of = 1/2 each
Total No. of atoms of A in ccp = (1/8) x(8-2) = (1/8) x 6 = 3/4 atoms
Total no. of atoms of B atoms = (1/2)x 6=3 atoms
Therefor molecular formula is A3/4B3 or AB4
Most Upvoted Answer
The unit cell of a binary alloy composed of A and B metals has a CCPst...
Explanation:
The given alloy has a CCP structure.
- CCP stands for cubic close packing. It means that the atoms are arranged in a way that they are as close together as possible, forming a cube (with atoms at the corners and in the center of each face).
- In this alloy, A atoms occupy the corners of the cube, and B atoms occupy the centers of each face of the cube.
If two A atoms are missed, the composition per unit cell of the alloy changes. We need to determine the new composition.
- Let's start by calculating the number of A and B atoms in the original unit cell:
- A atoms: There are 8 corners in a cube, and each corner is occupied by an A atom. So, there are 8 A atoms in the unit cell.
- B atoms: There are 6 faces in a cube, and each face has 1 B atom in its center. So, there are 6 B atoms in the unit cell.
Now, if two A atoms are missed, the new composition per unit cell would be:
- A atoms: There are now only 6 A atoms in the unit cell (8 - 2 = 6).
- B atoms: There are still 6 B atoms in the unit cell.
Therefore, the new composition per unit cell is AB4.
- There are 6 A atoms and 6 B atoms in the unit cell, with a ratio of 1:1.
- So, the formula for this binary alloy is AB4.
Hence, the correct answer is option B.
The given alloy has a CCP structure.
- CCP stands for cubic close packing. It means that the atoms are arranged in a way that they are as close together as possible, forming a cube (with atoms at the corners and in the center of each face).
- In this alloy, A atoms occupy the corners of the cube, and B atoms occupy the centers of each face of the cube.
If two A atoms are missed, the composition per unit cell of the alloy changes. We need to determine the new composition.
- Let's start by calculating the number of A and B atoms in the original unit cell:
- A atoms: There are 8 corners in a cube, and each corner is occupied by an A atom. So, there are 8 A atoms in the unit cell.
- B atoms: There are 6 faces in a cube, and each face has 1 B atom in its center. So, there are 6 B atoms in the unit cell.
Now, if two A atoms are missed, the new composition per unit cell would be:
- A atoms: There are now only 6 A atoms in the unit cell (8 - 2 = 6).
- B atoms: There are still 6 B atoms in the unit cell.
Therefore, the new composition per unit cell is AB4.
- There are 6 A atoms and 6 B atoms in the unit cell, with a ratio of 1:1.
- So, the formula for this binary alloy is AB4.
Hence, the correct answer is option B.
Free Test
FREE
| Start Free Test |
Community Answer
The unit cell of a binary alloy composed of A and B metals has a CCPst...
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
|
Explore Courses for NEET exam
|
|
Top Courses for NEETView all
The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer?
Question Description
The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer?.
The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer?.
Solutions for The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET.
Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer?, a detailed solution for The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The unit cell of a binary alloy composed of A and B metals has a CCPstructure with A atoms occupying the corners and B atoms occupying centres of each face of the cube. If during the crystallization of their alloy, in the unit cell two A atom are missed, the overall composition per unit cell is:a)AB6b)AB4c)AB8d)A6B24Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
|
|
Explore Courses for NEET exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup