What type of lattice is found in potassium chloride crystal?

Where are the constituent particles located in an end-centered unit cell?

The parameters of a monoclinic crystal system are .......

The number of planes of symmetry in a trigonal structure is:

The crystal system with edge lengths $a \neq b \neq c$ and axial angles $\alpha = \beta = \gamma = 90^{\circ}$ is '$x$' and the number of Bravais lattices for it is '$y$'. $x$ and $y$ are:

Which type of unit cell from the following is common to all seven types of crystal systems?