Question

In a skew symmetric matrix, the
diagonal elements are​

Answer 1

The elements on the diagonal of a skew-symmetric matrix are zero, and therefore its trace equals zero.

explaination

The main diagonal of a matrix consists of those elements that lie on the diagonal that runs from top left to bottom right. If the matrix is A, then its main diagonal are the elements who's row number and column number are equal, ajj. The other diagonal of a matrix is not important and does not have a name.