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सामन्य सूत्र `MX_(2)` वाले एक लवण का जल में विलेयता गुणांक `4 xx 10^(-12)` हैं| लवण की जलीय विलयन में `M^(2+)` आयनों की सांद्रता हैं:
A. `2 xx 10^(-6)` M
B. `1 xx 10^(-4)` M
C. `1.6 xx 10^(-4)` M
D. `4.0 xx 10^(-6)` M

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Correct Answer - ab
`MX_(4) ltimplies M^(4+) + 2X^(-)`
`K_(SP)MX_(2) = 4S^(2+) + 2X^(-)`
`therefore S=10^(-4)`
`therefore [M^(2+)] = 10^(-4)` M

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