how to find the valency of an element. explain by taking example of ferrous and krypton.
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The valency of an atom is equal to the number of electrons in the outer shell if that number is four or less. Otherwise, the valency is equal to eight minus the number of electrons in the outer shell. Once you know the number of electrons, you can easily calculate the valency
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It is the number of electrons an atom of an element can gain,lose or share. The valency of an atom is equal to thevalence electrons, if it is 4 or less. If it is more than 4, the valency is equal to 8 minus the number of electrons in the outer shell. Example: Magnesium has electronic configuration
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