Q)
Titanium monoxide has a rock−salt structure. X−ray diffraction data show that the length of one edge of the cubic unit cell for TiO with a 1:1 ratio of Ti to O is 4.18$A^{\large\circ}$, and the density as determined by volume and mass measurements is 4.92 g $cm^{–3}$. Do the data indicate that defects are present? If so, are they vacancy or interstitial defects? [Ti = 47.88 u].
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