The diffraction peaks shown in Figure 3.40 are indexed according to the reflection rules f...

The diffraction peaks shown in Figure 3.40 are indexed according to the reflection rules for BCC (i.e., the sum h + k + l must be even). Cite the h, k, and l indices for the first four diffraction peaks for FCC crystals consistent with h, k, and l being either all odd or all even.

Figure 3.40 Diffraction pattern for polycrystalline α-iron.