InterviewSolution
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How to find valency of compound |
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Answer» Valency of a COMPOUND can be found by 2 simple steps:1- You have to remember the valency of various elements2- calculate the overall valency, based on the number of +ve and -ve valency of elements of a compound.ex- You have to find the valency of S04S in ground state has e- conf. of 1s2 2s2 2p6 3s2 3P4 3d0The same e- conf. in excited state becomes 1s2 2s2 2p6 3s1 3p3 3d2AS THERE ARE 4 Oxygen, their overall e- is 8. Out of 8 electrons, 6 gets filled with sulphur to make e- conf 1s2 2s2 2p6 3s2 3p6 3d4. 2 electrons are still remaining unpaired. Hence the charge of SO4 is 2-.Explanation: Hope my ANSWER help you.......... Thank you |
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