Electron or positron

Up quark state

Down quark state

Density kg/m³

6.08349328E16

1.559132787E18

3.991380112E20

Immobilized Isotropic volume in m³

1.497393267E−47

1.314583939E−48

2.054037337E−50

Rest mass in kg

9.109381877E−31

2.049610921E−30

8.198443775E−30