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प्रश्न
Find the valency of the element which is underlined in the following formula.
- NaCl
- CO2
- Al (PO4)
- Ba (NO3)2
- CaCl2
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उत्तर
- NaCl = 1
- CO2 = 4
- Al(PO4) = 3
- Ba(NO3)2 = 2
- CaCl2 = 2
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