'X' is the number of acidic oxides among , , , and . The primary valency of cobalt in is Y. The value of is:

Question

'X' is the number of acidic oxides among , , ,  and . The primary valency of cobalt in  is Y. The value of  is:

Canvas Classes · Accepted Answer

Strategy:
 Identify acidic oxides based on transition metal oxidation states. Calculate the primary valency (oxidation state) of Cobalt in the given salt.

Step 1: Find 'X' (number of acidic oxides)
- :   Amphoteric.
- :   Basic.
- :   Highly Acidic.
- :   Predominantly Acidic (though sometimes classified as amphoteric, its acidic character is massive compared to lower oxides).
- :   Extremely Acidic (forms permanganic acid).
Number of acidic oxides = 3 ().

Step 2: Find 'Y' (primary valency)
Pr

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