Is there an expansion or contraction as iron transform from 21 HCP to BCC the atomic radius of iron is 125 pm in HCP but 50√2 pm in BCC - (1) Expansion (2) contraction (3) no change (4) unpredictable

Is there an expansion or contraction as iron transform from 21 HCP to

1.	Is there an expansion or contraction as iron transform from 21 HCP to BCC the atomic radius of iron is 125 pm in HCP but 50√2 pm in BCC - (1) Expansion (2) contraction (3) no change (4) unpredictable
Answer» contractionExplanation:HOPE its HELPFUL