Which of the following statement is not true about the hexagonal cl...

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Which of the following statement is not true about the hexagonal close packing?
\( \mathrm{P} \)
(i) The coordination number is 12 .
(ii) It has \( 74 \% \) packing efficiency.
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(iii) Tetrahedral voids of the second layer are covered by the spheres of the third layer.
(iv) In this arrangement spheres of the fourth layer are exactly aligned with those of the first layer.
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