A solid has a structure in which ' W' atoms are located at the corn...

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A solid has a structure in which ' W' atoms are located at the corners of a cubic lattice ' \( \mathrm{O} \) ' atoms at the centre of edges and \( \mathrm{Na} \) atoms at the centre of the cube. The formula for the compound is
(a) \( \mathrm{Na}_{2} \mathrm{WO}_{3} \)
(b) \( \mathrm{Na}_{2} \mathrm{WO}_{2} \)
(c) \( \mathrm{NaWO}_{2} \)
(d) \( \mathrm{NaWO}_{3} \)
\( \mathrm{P} \)
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