The size of an octahedral hole is less than that of tetrahedral hole.
A.
False
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When electrons are trapped in the crystal in the anionic vacancy, the defect is known as F-centres.
A.
True
In the crystal structures of sodium chloride, the arrangement of CI– ions is bcc.
A.
False
Dimagnetic substances are strongly attracted by magnetic field.
A.
False
In hcp and ccp structures, only 68% of the total space is filled by atoms.
A.
False
