In physics, the diameter of the ground-state hydrogen atom is an important measure of the size of a single atomic particle. The diameter of a ground-state hydrogen atom is often expressed using a power of 10.

According to the National Institute of Standards and Technology (NIST), the diameter of a ground-state hydrogen atom is approximately 0.00053 nanometers (nm). Since 1 nanometer is equal to 10^{-9} meters, the diameter of a ground-state hydrogen atom in meters can be expressed as 5.3 x 10^{-12} m.

In scientific notation, this would be written as 5.3E-12 m. The āEā stands for exponent, which means that the decimal is multiplied by 10 raised to the power of the exponent.

To summarize, the diameter of a ground-state hydrogen atom in meters can be expressed as 5.3E-12 m or 5.3 x 10^{-12} m using a power of 10.

### What is the order of magnitude of the diameter of a ground-state hydrogen atom in meters?

~ 10^-10 m

### What is the diameter of a ground-state hydrogen atom in nanometers?

The diameter of a ground-state hydrogen atom is approximately 0.53 nanometers.

### What is the radius of a ground-state hydrogen atom in nanometers?

The radius of a ground-state hydrogen atom in nanometers is approximately 0.5 nanometers.