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question_answer1) If 'Z' is the number of atoms in the unit cell that represents the closest packing sequence \[---A\ B\ C\ A\ B\ C--\ -,\] the number of tetrahedral voids in the unit cell is equal to [AIIMS 2005]
question_answer2) The close packing represents ABC ABC...... order of
question_answer3) The arrangement ABC ABC ABC ?.. is referred as [MP PET 2001]
question_answer4) The number of close neighbour in a body-centred cubic lattice of identical sphere is [MP PET 2001]
question_answer5) The number of equidistant oppositely charged ions in a sodium chloride crystal is [MP PET 2001]
question_answer6) \[Na\] and \[Mg\] crystallize in BCC and FCC type crystals respectively, then the number of atoms of \[Na\] and \[Mg\] present in the unit cell of their respective crystal is [AIEEE 2002]
question_answer7) An \[A{{B}_{2}}\] type structure is found in [AIIMS 2002]
question_answer8) Potassium crystallizes with a [MP PET/PMT 1998]
question_answer9) If the number of atoms per unit in a crystal is 2, the structure of crystal is
question_answer10) The intermetallic compound \[LiAg\] crystallizes in cubic lattice in which both lithium and silver have coordination number of eight. The crystal class is [CBSE PMT 1997]
question_answer11) The number of octahedral sites per sphere in a fcc structure is [MP PMT 2000, 01]
question_answer12) Hexagonal close packed arrangement of ions is described as [MP PMT 1994]
question_answer13) An example of a body cube is [AIIMS 1996]
question_answer14) An example of fluorite structure is
question_answer15) In which of the following crystals alternate tetrahedral voids are occupied? [IIT 2005]
question_answer16) Which of the following contains rock salt structure
question_answer17) In the fluorite structure, the coordination number of \[C{{a}^{2+}}\] ion is
question_answer18) The ratio of close-packed atoms to tetrahedral holes in cubic close packing is [Pb. PMT 1998]
question_answer19) A solid is made of two elements \[X\] and \[Z\]. The atoms \[Z\] are in CCP arrangement while the atom \[X\] occupy all the tetrahedral sites. What is the formula of the compound [UPSEAT 2004]
question_answer20) An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compound would be [CBSE PMT 2004; AIEEE 2005]
question_answer21) The vacant space in the bcc unit cell is
question_answer22) The number of octahedral voids in a unit cell of a cubical closest packed structure is
question_answer23) In the closest packed structure of a metallic lattice, the number of nearest neighbours of a metallic atom is [JIPMER 2002]
question_answer24) In the rock salt structure, the number of formula units per unit cell is equal to
question_answer25) Hexagonal close packing is found in crystal lattice of [MH CET 2002]
question_answer26) Which ion has the largest radius from the following ions
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