Question

Wavelengths are often represented in nm. What is the diameter of a helium (He) atom in

nm if it is equivalent to 1.0x10^-13 km?​

Answer 1

Diameter He = 0,1 nm.

Step-by-step explanation:

Km to nm:

⇒ Diameter He = 1.0 E-13 Km * ( 1000 m / Km ) * ( 1 E9 nm / m )

⇒ Diameter He = 0.1 nm

Answer 2

Answer: The diameter of helium atom is 0.1 nm.

Step-by-step explanation:

We are given:

Diameter of helium atom =
`1.0* 10^(-13)km`

To convert this diameter from kilometers to nano meters, we use the conversion factor:

`1km=10^(12)nm`

Converting the above diameter into nano meters, we get:

`\Rightarrow (1.0* 10^(-13)km)* ((10^(12)nm)/(1km))\\\\\Rightarrow 0.1nm`

Hence, the diameter of helium atom is 0.1 nm