Chemistry, asked by Priyankasahu325, 9 months ago

please guys help me in this question please answer all 4 questions

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Answered by sanidhya973

1

Answer:

concept to be applied here are given below

Explanation:

>the charge upon cyanide ion is -1.

>the charge upon ammonium ion is -1.

>oxygen is more electronegative than barium.

you must know the oxidation states of first 20 elements

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