Why Iron has variable valency?
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Iron (Fe) has an atomic number of 26, i.e. has 26 electrons. The energy of 4s and 3d orbital is similar (4s has slightly higher energy). ... Now, iron exhibits 2 valence states of +2 and +3. When iron loses the 2 4s electrons, it attains a valency of +2.
hope this helps you
Iron (Fe) has an atomic number of 26, i.e. has 26 electrons. The energy of 4s and 3d orbital is similar (4s has slightly higher energy). ... Now, iron exhibits 2 valence states of +2 and +3. When iron loses the 2 4s electrons, it attains a valency of +2.
hope this helps you
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