- d-block elements: Elements in which the last electron enters the d-orbital. Examples: Transition metals like Fe, Cu.
- f-block elements: Elements in which the last electron enters the f-orbital. Examples: Lanthanides and Actinides.
Find the values of \( x, y, z \) if the matrix \( A \) satisfies the equation \( A^T A = I \), where
\[ A = \begin{bmatrix} 0 & 2y & z \\ x & y & -z \\ x & -y & z \end{bmatrix} \]