If $a_{ij}=0\left(i\ne j\right)$ and $a_{ij}=2\left(i=j\right)$ then the matrix A=${\left[a_{ij}\right]}_{n\times n}$ is a _______ matrix

Given $A$ is a square matrix as the number of rows and columns are same as $n$.
We know that the elements $a_{ij}$ where $i=j$ lie along the diagonal and the  elements $a_{ij}$ where $i\ne j$ do not lie along the diagonal.
Given, diagonal elements $=2$ and the rest of the elements $=0$
Such a diagonal matrix where all diagonal elements are equal, is called a scalar matrix.