Which of the following statements are correct ?A. The coordination number of each type of ion in CsCl crystal is 8B. A metal that crystallizes in bcc structure has coordination number of 12C. A unit cell of an ionic crystal shares some of its ions with other unit cells.D. The length of the edge of unit cell of NaCl is 552 pm (`r_(Na^+)` =95 pm, `r_(Cl^-)`=181 pm)

Which of the following statements are correct ?A. The coordination num

1.	Which of the following statements are correct ?A. The coordination number of each type of ion in CsCl crystal is 8B. A metal that crystallizes in bcc structure has coordination number of 12C. A unit cell of an ionic crystal shares some of its ions with other unit cells.D. The length of the edge of unit cell of NaCl is 552 pm (`r_(Na^+)` =95 pm, `r_(Cl^-)`=181 pm)
Answer» Correct Answer - A,C,D (d) is correct because length of unit cell `=2(r_(Na^+)+r_(Cl^-))`=2(95+181) pm (a) and (c ) are also corect Only (b) is wrong because for a metal with bcc structure, coordination number =8

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The gases obey the different gas laws only theoretically. Practically all of them show some deviation from these laws. These are called real gases. The deviation are maximum under high pressyre and at low temperature. These are comparatively small when the conditions are reversed. It has been found that the easily liquefiable gases show more deviations from the ideal gas beheviour as compared to the gases which are liqufied with diffculty. Gas deviates from ideal gas beheviour because moleculesA. are coloulessB. attract each otherC. contain covalent bondD. show Brownian Movement.
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