Here's a breakdown:

* Diploid: Having two sets of chromosomes. This is the typical state for most human cells.

* Haploid: Having one set of chromosomes. This is the state of sex cells (sperm and egg).

* Polyploid: Having more than two sets of chromosomes. This is rare in humans and can lead to developmental issues.

Therefore, a normal human cell contains 46 chromosomes arranged in 23 pairs.