The `gamma`-form of iron has `fcc` structure (edge length `386 pm`) and `beta`-form has `
Channel: Doubtnut
Date: 2020-07-12

The `gamma`-form of iron has `fcc` structure (edge length `386 pm`) and `beta`-form has `bcc` structure (edge length `290 pm`). The ratio of density in `gamma`-form and `beta`-form  is