What is a Zero or Null Matrix?
A matrix, in which all elements are zero, is called a null matrix or a zero matrix.

Orders of Zero or Null Matrix matrix
Zero or Null Matrix Matrix of order 1 (1×1 matrix)
Matrix = [0]
In a 1×1 matrix, all elements are zero, so it is a Zero or Null Matrix matrix.
Note: All matrices with the size of 1×1 are square, Zero or Null Matrix, diagonal, lower triangular, upper triangular, and symmetric.
Zero or Null Matrix Matrix of order 2 – the first example (2×2 matrix)
0 0
0 0
Zero or Null Matrix Matrix of order 2 – 2nd example
0 0
0 0
Zero or Null Matrix Matrix of order 2 – 3rd example
0 0
0 0
Zero or Null Matrix Matrix of order 3 – (3×3 matrix)
0 0 0
0 0 0
0 0 0
Zero or Null Matrix Matrix of order 4 – (4×4 matrix)
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
Zero or Null Matrix Matrix of order 5 – (5×5 matrix)
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
Zero or Null Matrix Matrix of order 6 – (6×6 matrix)
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
0 0 0 0 0 0
Zero or Null Matrix Matrix of order 7 – (7×7 matrix)
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
0 0 0 0 0 0 0
Zero or Null Matrix Matrix of order 8 – (8×8 matrix)
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0
Zero or Null Matrix Matrix of order 9 – (9×9 matrix)
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
Zero or Null Matrix Matrix of order 10 – (10×10 matrix)
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0