318915
What is the radius (in pm ) of an atom of an element which crystallises in simple cubic structure? [Given: Edge length of unit cell \({\mathrm{=336 \,\mathrm{pm}}}\) ].
1 168
2 100
3 336
4 672
Explanation:
For simple cubic structure, \({\mathrm{a=2 r}}\) \({\mathrm{\therefore \quad \mathrm{r}=\dfrac{\mathrm{a}}{2}=\dfrac{336}{2}=168 \mathrm{pm}}}\)
CHXII01:THE SOLID STATE
318916
What is the packing efficiency of unit cell which is represented in the figure?
1 \(74 \%\)
2 \(68 \%\)
3 \(52 \%\)
4 \(38 \%\)
Explanation:
Given figure represents FCC unit cell having \(74 \%\) packing efficiency.
CHXII01:THE SOLID STATE
318917
The percentage of empty space in a body centred cubic arrangement is
1 74
2 68
3 32
4 26
Explanation:
Empty space in a \(B C C\) arrangement \(=100\) - Packing efficiency \(=100-68=32 \%\)
CHXII01:THE SOLID STATE
318918
I. Bcc structure has maximum packing efficiency. II. Percentage of total space filled by the particles is called packing efficiency Which of the above statement(s) is/are true?
1 Only I
2 Only II
3 Both I and II
4 None of these
Explanation:
hcp and ccp unit cells have maximum packing efficiency (i.e. 74\%), which shows the percentage of total space filled by the particles.
318915
What is the radius (in pm ) of an atom of an element which crystallises in simple cubic structure? [Given: Edge length of unit cell \({\mathrm{=336 \,\mathrm{pm}}}\) ].
1 168
2 100
3 336
4 672
Explanation:
For simple cubic structure, \({\mathrm{a=2 r}}\) \({\mathrm{\therefore \quad \mathrm{r}=\dfrac{\mathrm{a}}{2}=\dfrac{336}{2}=168 \mathrm{pm}}}\)
CHXII01:THE SOLID STATE
318916
What is the packing efficiency of unit cell which is represented in the figure?
1 \(74 \%\)
2 \(68 \%\)
3 \(52 \%\)
4 \(38 \%\)
Explanation:
Given figure represents FCC unit cell having \(74 \%\) packing efficiency.
CHXII01:THE SOLID STATE
318917
The percentage of empty space in a body centred cubic arrangement is
1 74
2 68
3 32
4 26
Explanation:
Empty space in a \(B C C\) arrangement \(=100\) - Packing efficiency \(=100-68=32 \%\)
CHXII01:THE SOLID STATE
318918
I. Bcc structure has maximum packing efficiency. II. Percentage of total space filled by the particles is called packing efficiency Which of the above statement(s) is/are true?
1 Only I
2 Only II
3 Both I and II
4 None of these
Explanation:
hcp and ccp unit cells have maximum packing efficiency (i.e. 74\%), which shows the percentage of total space filled by the particles.
NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII01:THE SOLID STATE
318915
What is the radius (in pm ) of an atom of an element which crystallises in simple cubic structure? [Given: Edge length of unit cell \({\mathrm{=336 \,\mathrm{pm}}}\) ].
1 168
2 100
3 336
4 672
Explanation:
For simple cubic structure, \({\mathrm{a=2 r}}\) \({\mathrm{\therefore \quad \mathrm{r}=\dfrac{\mathrm{a}}{2}=\dfrac{336}{2}=168 \mathrm{pm}}}\)
CHXII01:THE SOLID STATE
318916
What is the packing efficiency of unit cell which is represented in the figure?
1 \(74 \%\)
2 \(68 \%\)
3 \(52 \%\)
4 \(38 \%\)
Explanation:
Given figure represents FCC unit cell having \(74 \%\) packing efficiency.
CHXII01:THE SOLID STATE
318917
The percentage of empty space in a body centred cubic arrangement is
1 74
2 68
3 32
4 26
Explanation:
Empty space in a \(B C C\) arrangement \(=100\) - Packing efficiency \(=100-68=32 \%\)
CHXII01:THE SOLID STATE
318918
I. Bcc structure has maximum packing efficiency. II. Percentage of total space filled by the particles is called packing efficiency Which of the above statement(s) is/are true?
1 Only I
2 Only II
3 Both I and II
4 None of these
Explanation:
hcp and ccp unit cells have maximum packing efficiency (i.e. 74\%), which shows the percentage of total space filled by the particles.
318915
What is the radius (in pm ) of an atom of an element which crystallises in simple cubic structure? [Given: Edge length of unit cell \({\mathrm{=336 \,\mathrm{pm}}}\) ].
1 168
2 100
3 336
4 672
Explanation:
For simple cubic structure, \({\mathrm{a=2 r}}\) \({\mathrm{\therefore \quad \mathrm{r}=\dfrac{\mathrm{a}}{2}=\dfrac{336}{2}=168 \mathrm{pm}}}\)
CHXII01:THE SOLID STATE
318916
What is the packing efficiency of unit cell which is represented in the figure?
1 \(74 \%\)
2 \(68 \%\)
3 \(52 \%\)
4 \(38 \%\)
Explanation:
Given figure represents FCC unit cell having \(74 \%\) packing efficiency.
CHXII01:THE SOLID STATE
318917
The percentage of empty space in a body centred cubic arrangement is
1 74
2 68
3 32
4 26
Explanation:
Empty space in a \(B C C\) arrangement \(=100\) - Packing efficiency \(=100-68=32 \%\)
CHXII01:THE SOLID STATE
318918
I. Bcc structure has maximum packing efficiency. II. Percentage of total space filled by the particles is called packing efficiency Which of the above statement(s) is/are true?
1 Only I
2 Only II
3 Both I and II
4 None of these
Explanation:
hcp and ccp unit cells have maximum packing efficiency (i.e. 74\%), which shows the percentage of total space filled by the particles.
