Dobereiner traids is [RPMT 1997]

1.	Dobereiner traids is [RPMT 1997]
A.	\[Na\], \[K\], \[Rb\]
B.	\[Mg,\]\[S,\]\[As\]
C.	\[Cl\], \[Br,I\]
D.	\[P,\]\[S,\], \[As\]
Answer» D. \[P,\]\[S,\], \[As\]

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Dobereiner traids is [RPMT 1997]

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