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Valency and Oxidation States

a compound co...

Question

a compound contains atoms of three elements a,b,c. if the oxidation no. of a=+2,b=+5,c=-2 the possible formula of the compound is ? how?

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Solution

$F r o m t h e g i v e n d a t a s i t s a s s u m e d t h a t A i s h a v i n g o x i d a t i o n s t a t e o f + 2 = S o A b e l o n g s t o b e r y l l i u m g r o u p . B i s h a v i n g o x i d a t i o n s t a t e o f + 5 = S o B b e l o n g s t o N i t r o g e n g r o u p . C i s h a v i n g o x i d a t i o n s t a t e o f - 2 = o x i d e g r o u p . S o t h e f o r m u l a i s M_{3} (P O_{4})_{2} T h u s 3 (- 2) + 2 x + 8 (- 2) = 0 2 x = 10 x = + 5$

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