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A solid has a structure in which W atoms are located at the corners of the lattice. O atoms at the centre of the edges and Na atom at the centre of the cube. The formula of the compound is
A. |
`NaWO_2` |
B. |
`Na_2WO_3` |
C. |
`NaWO_3` |
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D. |
`NaWO_4` |