Question

The radius of a helium atom is a 31 PM. What is the radius in nanometers?

Answer 1

To convert the radius of a helium atom from 31 picometers to nanometers, divide by 1,000, giving a radius of 0.031 nanometers.

Step-by-step explanation:

The radius of a helium atom is given as 31 picometers (PM). To convert this measurement to nanometers (nm), we need to use the unit conversion that 1 nanopico meter is equivalent to 10-9 meters, whereas 1 picometer is equivalent to 10-12 meters. To convert from picometers to nanometers, you divide the number of picometers by 1,000 since there are 1,000 picometers in one nanometer.

The radius of a helium atom in nanometers can thus be calculated as follows:

Radius in nm = Radius in pm / 1,000

Therefore, the radius in nanometers is:

31 pm / 1,000 = 0.031 nm.

Answer 2

Thus, the radius of the helium atom in nanometers is - 0.031 nm

Step-by-step explanation:

Given that:-

The radius of the helium atom = 31 pm

Considering the conversion of length in pm to the length in nm as:-

1 pm = 0.001 nm

So,

Applying the above conversion factor in the radius of helium atom as:-

Radius =
`31* 0.001` nm = 0.031 nm

Thus, the radius of the helium atom in nanometers is - 0.031 nm