A) \[\uparrow \bigcirc \uparrow \bigcirc \uparrow \bigcirc \uparrow \bigcirc \uparrow \bigcirc \uparrow \bigcirc \]
B) \[\uparrow \bigcirc \uparrow \bigcirc \downarrow \bigcirc \uparrow \bigcirc \uparrow \bigcirc \downarrow \bigcirc \]
C) \[\uparrow \bigcirc \downarrow \bigcirc \downarrow \bigcirc \downarrow \bigcirc \downarrow \bigcirc \uparrow \bigcirc \]
D) \[\uparrow \bigcirc \downarrow \bigcirc \uparrow \bigcirc \downarrow \bigcirc \uparrow \bigcirc \downarrow \bigcirc \]
Correct Answer: D
Solution :
The arrangement of option (D) shows the schematic alignment of magnetic moments of anti-ferromagnetic substance. In an anti-ferromagnetic substance, the magnetic moments align in a regular pattern with neighbouring spins pointing in opposite directions.
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