Is the higher the pixel, the smaller the pixel?

In the case of the same photosensitive element area, the higher (more) pixels are, the smaller the pixel points are.

For example, Nikon D5 100 is in APS-C format, with a sensor area of 23.6* 15.6mm and pixels of16.2 million. D5200 is also in APS-C format, and the sensor area is 23.6* 15.6mm, but the number of pixels has increased to 2465438+ million, and the area occupied by a single pixel is smaller.

Theoretically, the pixel is directly proportional to the resolution, but the final resolution is also affected by the resolution of the lens.