If each element of a matrix is zero, then the matrix is:
Concept Used:
A matrix in which all elements are zero is called a null matrix.
Solution:
Identity Matrix: Has 1s on the main diagonal and 0s elsewhere. Not correct here.
Scalar Matrix: A square matrix with all diagonal elements equal (non-zero) and off-diagonal elements as 0. Not correct here.
Square Matrix: Refers to the shape of a matrix, not its content. Not relevant here.
Null Matrix: A matrix with all elements being zero. Correct.
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