how to calculate valency of iron
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take the atomic number that is 26
we know that atomic number is equal to number of electrons therefore no. of electrons=26 now configure it in the shell KLMN
we know that atomic number is equal to number of electrons therefore no. of electrons=26 now configure it in the shell KLMN
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In order to find valency of iron first you need to know its atomic no. i.e. 26 then arrange the electrons in the energy shells and find its electronic configuration .then if in the last energy if the no is >4 then it will give electrons but if <4 it will take electron. the no. of electron it will gain or lose is its valency
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