Boron has an atomic radius of 85 pm

CHEMISTRY · Subjective · IB Diploma Programme · Chemistry · Materials and Bonding Models · Materials and Bonding Models

Problem

Boron has an atomic radius of 85 pm, whereas magnesium has an atomic radius of 160 pm. Explain why adding boron to magnesium is expected to produce an interstitial alloy rather than a substitutional alloy.

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