1Which of these has the same dimensions as electron mass?
Electron mass and atomic mass unit both have the dimensions [M].
Fundamental constantsClass 12, Atoms
Dimensional formula of Electron mass
[M]
About 9.11 × 10⁻³¹ kg. It has the dimension of mass.
How to get the dimensional formula of electron mass
- Start from the definition: electron mass = mass.
- Put in the dimension of each part: [M].
- Add the powers of each base quantity: [M].
Quantities with the dimensions [M]
Equal dimensions do not make them the same quantity. Compare electron mass with the others in the full grid.
Three questions on electron mass
2What is the SI unit of electron mass?
The SI unit of electron mass is the kilogram (kg).
3Which one has different dimensions from the others?
Faraday constant is [T A mol⁻¹]. The other three are all [M].
Electron mass: quick answers
What is the dimensional formula of electron mass?
The dimensional formula of electron mass is [M]. It comes from electron mass = mass.
What is the SI unit of electron mass?
The SI unit of electron mass is the kilogram (kg).
Which quantities have the same dimensions as electron mass?
Electron mass shares [M] with mass, atomic mass unit. Equal dimensions do not make them the same quantity.