For orthorhombic system axial ratios are a≠b≠c and the axial angles areα=β=γ≠90∘α=β=γ=90∘α=β=γ=90∘,β=90∘α≠β≠γ=90∘

The orthorhombic system in crystallography is characterized by specific properties regarding its axial ratios and angles. Below are the key points that define the orthorhombic system:

1. Axial Ratios: In the orthorhombic system, the lengths of the three axes are unequal. This is denoted as $a \neq b \neq c$, where $a$, $b$, and $c$ are the lengths of the crystal axes.

2. Axial Angles: The angles between the axes in the orthorhombic system are all $90^\circ$. Specifically, this means:

   • $\alpha = 90^\circ$
   • $\beta = 90^\circ$
   • $\gamma = 90^\circ$

In summary, the defining characteristics of the orthorhombic system are:

• Axial ratios: $a \neq b \neq c$
• Axial angles: $\alpha = \beta = \gamma = 90^\circ$

This definition helps to distinguish the orthorhombic system from other crystal systems, where the relationships between axial lengths and angles may vary.