318771
Which among the following metals crystallise as a simple cube?
1 Polonium
2 Iron
3 Copper
4 Gold
Explanation:
Polonium is a radioactive element having two metallic allotropic forms; \(\alpha\)-form and \(\beta\) form. Out of these two forms, \(\alpha\)-Po form crystallises as simple cubic crystal. Copper and gold crystallises in face centred cubic crystal and iron crystallises in body centred cubic crystal.
MHTCET - 2016
CHXII01:THE SOLID STATE
318772
Hexagonal crystal system has the following unit cell dimensions
1 \(a=b=c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
2 \(a=b \neq c\) and \(\alpha=\beta=90^{\circ}, \gamma=120^{\circ}\)
3 \(a \neq b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
4 \(a=b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
Explanation:
Hexagonal system has the unit cell dimension as follows, \[ a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ} \]
CHXII01:THE SOLID STATE
318773
In the figure given below, four parallelograms are shown.How many parallelograms are unit cells?
1 1
2 2
3 3
4 4
Explanation:
Figures \({\mathrm{A}}\) and \({\mathrm{D}}\).
CHXII01:THE SOLID STATE
318774
The axial angles in triclinic crystal system are
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CHXII01:THE SOLID STATE
318771
Which among the following metals crystallise as a simple cube?
1 Polonium
2 Iron
3 Copper
4 Gold
Explanation:
Polonium is a radioactive element having two metallic allotropic forms; \(\alpha\)-form and \(\beta\) form. Out of these two forms, \(\alpha\)-Po form crystallises as simple cubic crystal. Copper and gold crystallises in face centred cubic crystal and iron crystallises in body centred cubic crystal.
MHTCET - 2016
CHXII01:THE SOLID STATE
318772
Hexagonal crystal system has the following unit cell dimensions
1 \(a=b=c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
2 \(a=b \neq c\) and \(\alpha=\beta=90^{\circ}, \gamma=120^{\circ}\)
3 \(a \neq b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
4 \(a=b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
Explanation:
Hexagonal system has the unit cell dimension as follows, \[ a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ} \]
CHXII01:THE SOLID STATE
318773
In the figure given below, four parallelograms are shown.How many parallelograms are unit cells?
1 1
2 2
3 3
4 4
Explanation:
Figures \({\mathrm{A}}\) and \({\mathrm{D}}\).
CHXII01:THE SOLID STATE
318774
The axial angles in triclinic crystal system are
318771
Which among the following metals crystallise as a simple cube?
1 Polonium
2 Iron
3 Copper
4 Gold
Explanation:
Polonium is a radioactive element having two metallic allotropic forms; \(\alpha\)-form and \(\beta\) form. Out of these two forms, \(\alpha\)-Po form crystallises as simple cubic crystal. Copper and gold crystallises in face centred cubic crystal and iron crystallises in body centred cubic crystal.
MHTCET - 2016
CHXII01:THE SOLID STATE
318772
Hexagonal crystal system has the following unit cell dimensions
1 \(a=b=c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
2 \(a=b \neq c\) and \(\alpha=\beta=90^{\circ}, \gamma=120^{\circ}\)
3 \(a \neq b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
4 \(a=b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
Explanation:
Hexagonal system has the unit cell dimension as follows, \[ a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ} \]
CHXII01:THE SOLID STATE
318773
In the figure given below, four parallelograms are shown.How many parallelograms are unit cells?
1 1
2 2
3 3
4 4
Explanation:
Figures \({\mathrm{A}}\) and \({\mathrm{D}}\).
CHXII01:THE SOLID STATE
318774
The axial angles in triclinic crystal system are
318771
Which among the following metals crystallise as a simple cube?
1 Polonium
2 Iron
3 Copper
4 Gold
Explanation:
Polonium is a radioactive element having two metallic allotropic forms; \(\alpha\)-form and \(\beta\) form. Out of these two forms, \(\alpha\)-Po form crystallises as simple cubic crystal. Copper and gold crystallises in face centred cubic crystal and iron crystallises in body centred cubic crystal.
MHTCET - 2016
CHXII01:THE SOLID STATE
318772
Hexagonal crystal system has the following unit cell dimensions
1 \(a=b=c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
2 \(a=b \neq c\) and \(\alpha=\beta=90^{\circ}, \gamma=120^{\circ}\)
3 \(a \neq b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
4 \(a=b \neq c\) and \(\alpha=\beta=\gamma=90^{\circ}\)
Explanation:
Hexagonal system has the unit cell dimension as follows, \[ a=b \neq c, \alpha=\beta=90^{\circ}, \gamma=120^{\circ} \]
CHXII01:THE SOLID STATE
318773
In the figure given below, four parallelograms are shown.How many parallelograms are unit cells?
1 1
2 2
3 3
4 4
Explanation:
Figures \({\mathrm{A}}\) and \({\mathrm{D}}\).
CHXII01:THE SOLID STATE
318774
The axial angles in triclinic crystal system are
