Structure of Ionic Crystals
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CHXII01:THE SOLID STATE

318951 In the lattice of \(\mathrm{NaCl}\) structure, if the diameter of \(\mathrm{Na}^{+}\)ions is \(\mathrm{x}\) and the radius of \(\mathrm{Cl}^{-}\)ions is \(\mathrm{y}\), then edge length of \(\mathrm{NaCl}\) in the crystal is

1 \(x+y\)
2 \(x+2 y\)
3 \(2 x+2 y\)
4 \(2 x+y\)
CHXII01:THE SOLID STATE

318952 Volume occupied by single \(\mathrm{CsCl}\) ion pair in a crystal is \(7.014 \times 10^{-23} \mathrm{~cm}^{3}\). The smallest Cs Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one \(\mathrm{CsCl}\) ion pair. The smallest \(\mathrm{Cs}\) to \(\mathrm{Cs}\) internuclear distance is nearly

1 \({\rm{4}}{\rm{.4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 \({\rm{4}}{\rm{.3}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 \({\rm{4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 \({\rm{4}}{\rm{.5}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
KCET - 2014
CHXII01:THE SOLID STATE

318953 Which of the following is the incorrect statement?

1 \(\mathrm{NaCl}\) has \(6: 6\) coordination and \(\mathrm{CsCl}\) has \(8: 8\) coordination
2 In \(\mathrm{Na}_{2} \mathrm{O}\) each oxide ion is coordinated by \(8 \mathrm{Na}^{+}\)ions and each \(\mathrm{Na}^{+}\)ion by 4 oxide ions
3 \(\mathrm{NaCl}\) structure transform to \(\mathrm{CsCl}\) structure on heating
4 \(\mathrm{NaCl}\) is subjected to high pressure, it transforms into \(\mathrm{CsCl}\)
CHXII01:THE SOLID STATE

318954 The melting point of \(\mathrm{RbBr}\) is \(682^{\circ} \mathrm{C}\) while that of \(\mathrm{NaF}\) is \(988^{\circ} \mathrm{C}\). The principal reason that melting point of \(\mathrm{NaF}\) is much higher than that of \(\mathrm{RbBr}\) is that

1 The bond in \(\mathrm{RbBr}\) has more covalent character than the bond in \(\mathrm{NaF}\)
2 The two crystals are not isomorphous
3 The internuclear distance \(r_{c}+r_{a}\) is greater for \(\mathrm{RbBr}\) than for \(\mathrm{NaF}\)
4 The molar mass of NaF is smaller than that of \(\mathrm{RbBr}\)
CHXII01:THE SOLID STATE

318955 In the crystals of which of the following ionic compounds would you except maximum distance between the centres of the cations and anions?

1 LiI
2 \(\mathrm{LiF}\)
3 CsI
4 \(\mathrm{CsF}\)
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CHXII01:THE SOLID STATE

318951 In the lattice of \(\mathrm{NaCl}\) structure, if the diameter of \(\mathrm{Na}^{+}\)ions is \(\mathrm{x}\) and the radius of \(\mathrm{Cl}^{-}\)ions is \(\mathrm{y}\), then edge length of \(\mathrm{NaCl}\) in the crystal is

1 \(x+y\)
2 \(x+2 y\)
3 \(2 x+2 y\)
4 \(2 x+y\)
CHXII01:THE SOLID STATE

318952 Volume occupied by single \(\mathrm{CsCl}\) ion pair in a crystal is \(7.014 \times 10^{-23} \mathrm{~cm}^{3}\). The smallest Cs Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one \(\mathrm{CsCl}\) ion pair. The smallest \(\mathrm{Cs}\) to \(\mathrm{Cs}\) internuclear distance is nearly

1 \({\rm{4}}{\rm{.4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 \({\rm{4}}{\rm{.3}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 \({\rm{4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 \({\rm{4}}{\rm{.5}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
KCET - 2014
CHXII01:THE SOLID STATE

318953 Which of the following is the incorrect statement?

1 \(\mathrm{NaCl}\) has \(6: 6\) coordination and \(\mathrm{CsCl}\) has \(8: 8\) coordination
2 In \(\mathrm{Na}_{2} \mathrm{O}\) each oxide ion is coordinated by \(8 \mathrm{Na}^{+}\)ions and each \(\mathrm{Na}^{+}\)ion by 4 oxide ions
3 \(\mathrm{NaCl}\) structure transform to \(\mathrm{CsCl}\) structure on heating
4 \(\mathrm{NaCl}\) is subjected to high pressure, it transforms into \(\mathrm{CsCl}\)
CHXII01:THE SOLID STATE

318954 The melting point of \(\mathrm{RbBr}\) is \(682^{\circ} \mathrm{C}\) while that of \(\mathrm{NaF}\) is \(988^{\circ} \mathrm{C}\). The principal reason that melting point of \(\mathrm{NaF}\) is much higher than that of \(\mathrm{RbBr}\) is that

1 The bond in \(\mathrm{RbBr}\) has more covalent character than the bond in \(\mathrm{NaF}\)
2 The two crystals are not isomorphous
3 The internuclear distance \(r_{c}+r_{a}\) is greater for \(\mathrm{RbBr}\) than for \(\mathrm{NaF}\)
4 The molar mass of NaF is smaller than that of \(\mathrm{RbBr}\)
CHXII01:THE SOLID STATE

318955 In the crystals of which of the following ionic compounds would you except maximum distance between the centres of the cations and anions?

1 LiI
2 \(\mathrm{LiF}\)
3 CsI
4 \(\mathrm{CsF}\)
For More Updates join with Us
CHXII01:THE SOLID STATE

318951 In the lattice of \(\mathrm{NaCl}\) structure, if the diameter of \(\mathrm{Na}^{+}\)ions is \(\mathrm{x}\) and the radius of \(\mathrm{Cl}^{-}\)ions is \(\mathrm{y}\), then edge length of \(\mathrm{NaCl}\) in the crystal is

1 \(x+y\)
2 \(x+2 y\)
3 \(2 x+2 y\)
4 \(2 x+y\)
CHXII01:THE SOLID STATE

318952 Volume occupied by single \(\mathrm{CsCl}\) ion pair in a crystal is \(7.014 \times 10^{-23} \mathrm{~cm}^{3}\). The smallest Cs Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one \(\mathrm{CsCl}\) ion pair. The smallest \(\mathrm{Cs}\) to \(\mathrm{Cs}\) internuclear distance is nearly

1 \({\rm{4}}{\rm{.4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 \({\rm{4}}{\rm{.3}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 \({\rm{4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 \({\rm{4}}{\rm{.5}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
KCET - 2014
CHXII01:THE SOLID STATE

318953 Which of the following is the incorrect statement?

1 \(\mathrm{NaCl}\) has \(6: 6\) coordination and \(\mathrm{CsCl}\) has \(8: 8\) coordination
2 In \(\mathrm{Na}_{2} \mathrm{O}\) each oxide ion is coordinated by \(8 \mathrm{Na}^{+}\)ions and each \(\mathrm{Na}^{+}\)ion by 4 oxide ions
3 \(\mathrm{NaCl}\) structure transform to \(\mathrm{CsCl}\) structure on heating
4 \(\mathrm{NaCl}\) is subjected to high pressure, it transforms into \(\mathrm{CsCl}\)
CHXII01:THE SOLID STATE

318954 The melting point of \(\mathrm{RbBr}\) is \(682^{\circ} \mathrm{C}\) while that of \(\mathrm{NaF}\) is \(988^{\circ} \mathrm{C}\). The principal reason that melting point of \(\mathrm{NaF}\) is much higher than that of \(\mathrm{RbBr}\) is that

1 The bond in \(\mathrm{RbBr}\) has more covalent character than the bond in \(\mathrm{NaF}\)
2 The two crystals are not isomorphous
3 The internuclear distance \(r_{c}+r_{a}\) is greater for \(\mathrm{RbBr}\) than for \(\mathrm{NaF}\)
4 The molar mass of NaF is smaller than that of \(\mathrm{RbBr}\)
CHXII01:THE SOLID STATE

318955 In the crystals of which of the following ionic compounds would you except maximum distance between the centres of the cations and anions?

1 LiI
2 \(\mathrm{LiF}\)
3 CsI
4 \(\mathrm{CsF}\)
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CHXII01:THE SOLID STATE

318951 In the lattice of \(\mathrm{NaCl}\) structure, if the diameter of \(\mathrm{Na}^{+}\)ions is \(\mathrm{x}\) and the radius of \(\mathrm{Cl}^{-}\)ions is \(\mathrm{y}\), then edge length of \(\mathrm{NaCl}\) in the crystal is

1 \(x+y\)
2 \(x+2 y\)
3 \(2 x+2 y\)
4 \(2 x+y\)
CHXII01:THE SOLID STATE

318952 Volume occupied by single \(\mathrm{CsCl}\) ion pair in a crystal is \(7.014 \times 10^{-23} \mathrm{~cm}^{3}\). The smallest Cs Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one \(\mathrm{CsCl}\) ion pair. The smallest \(\mathrm{Cs}\) to \(\mathrm{Cs}\) internuclear distance is nearly

1 \({\rm{4}}{\rm{.4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 \({\rm{4}}{\rm{.3}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 \({\rm{4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 \({\rm{4}}{\rm{.5}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
KCET - 2014
CHXII01:THE SOLID STATE

318953 Which of the following is the incorrect statement?

1 \(\mathrm{NaCl}\) has \(6: 6\) coordination and \(\mathrm{CsCl}\) has \(8: 8\) coordination
2 In \(\mathrm{Na}_{2} \mathrm{O}\) each oxide ion is coordinated by \(8 \mathrm{Na}^{+}\)ions and each \(\mathrm{Na}^{+}\)ion by 4 oxide ions
3 \(\mathrm{NaCl}\) structure transform to \(\mathrm{CsCl}\) structure on heating
4 \(\mathrm{NaCl}\) is subjected to high pressure, it transforms into \(\mathrm{CsCl}\)
CHXII01:THE SOLID STATE

318954 The melting point of \(\mathrm{RbBr}\) is \(682^{\circ} \mathrm{C}\) while that of \(\mathrm{NaF}\) is \(988^{\circ} \mathrm{C}\). The principal reason that melting point of \(\mathrm{NaF}\) is much higher than that of \(\mathrm{RbBr}\) is that

1 The bond in \(\mathrm{RbBr}\) has more covalent character than the bond in \(\mathrm{NaF}\)
2 The two crystals are not isomorphous
3 The internuclear distance \(r_{c}+r_{a}\) is greater for \(\mathrm{RbBr}\) than for \(\mathrm{NaF}\)
4 The molar mass of NaF is smaller than that of \(\mathrm{RbBr}\)
CHXII01:THE SOLID STATE

318955 In the crystals of which of the following ionic compounds would you except maximum distance between the centres of the cations and anions?

1 LiI
2 \(\mathrm{LiF}\)
3 CsI
4 \(\mathrm{CsF}\)
Join With Us for More Updates
CHXII01:THE SOLID STATE

318951 In the lattice of \(\mathrm{NaCl}\) structure, if the diameter of \(\mathrm{Na}^{+}\)ions is \(\mathrm{x}\) and the radius of \(\mathrm{Cl}^{-}\)ions is \(\mathrm{y}\), then edge length of \(\mathrm{NaCl}\) in the crystal is

1 \(x+y\)
2 \(x+2 y\)
3 \(2 x+2 y\)
4 \(2 x+y\)
CHXII01:THE SOLID STATE

318952 Volume occupied by single \(\mathrm{CsCl}\) ion pair in a crystal is \(7.014 \times 10^{-23} \mathrm{~cm}^{3}\). The smallest Cs Cs internuclear distance is equal to length of the side of the cube corresponding to volume of one \(\mathrm{CsCl}\) ion pair. The smallest \(\mathrm{Cs}\) to \(\mathrm{Cs}\) internuclear distance is nearly

1 \({\rm{4}}{\rm{.4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
2 \({\rm{4}}{\rm{.3}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
3 \({\rm{4}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
4 \({\rm{4}}{\rm{.5}}\mathop {\rm{A}}\limits^{\rm{^\circ }} \)
KCET - 2014
CHXII01:THE SOLID STATE

318953 Which of the following is the incorrect statement?

1 \(\mathrm{NaCl}\) has \(6: 6\) coordination and \(\mathrm{CsCl}\) has \(8: 8\) coordination
2 In \(\mathrm{Na}_{2} \mathrm{O}\) each oxide ion is coordinated by \(8 \mathrm{Na}^{+}\)ions and each \(\mathrm{Na}^{+}\)ion by 4 oxide ions
3 \(\mathrm{NaCl}\) structure transform to \(\mathrm{CsCl}\) structure on heating
4 \(\mathrm{NaCl}\) is subjected to high pressure, it transforms into \(\mathrm{CsCl}\)
CHXII01:THE SOLID STATE

318954 The melting point of \(\mathrm{RbBr}\) is \(682^{\circ} \mathrm{C}\) while that of \(\mathrm{NaF}\) is \(988^{\circ} \mathrm{C}\). The principal reason that melting point of \(\mathrm{NaF}\) is much higher than that of \(\mathrm{RbBr}\) is that

1 The bond in \(\mathrm{RbBr}\) has more covalent character than the bond in \(\mathrm{NaF}\)
2 The two crystals are not isomorphous
3 The internuclear distance \(r_{c}+r_{a}\) is greater for \(\mathrm{RbBr}\) than for \(\mathrm{NaF}\)
4 The molar mass of NaF is smaller than that of \(\mathrm{RbBr}\)
CHXII01:THE SOLID STATE

318955 In the crystals of which of the following ionic compounds would you except maximum distance between the centres of the cations and anions?

1 LiI
2 \(\mathrm{LiF}\)
3 CsI
4 \(\mathrm{CsF}\)