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Packing Fraction and Efficiency

88.The ABAB c...

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88.The ABAB close packing and ABC ABC close packing are respectively called as (1) hexagonal close packing(hcp) and cubic close packing (ccp) (2) ccp and hcp (3) body centred cubic(bcc) packing and hexagonal close packing (hcp) (4) hcp and bcc

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If true enter 1,else enter 0.

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