Question

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

Answer 1

Answer: The diameter of helium atom is 0.1 nm.

Explanation:

We are given:

Diameter of helium atom = $1.0\times 10^{-13}km$

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:

$\Rightarrow (1.0\times 10^{-13}km)\times (\frac{10^{12}nm}{1km})\\\\\Rightarrow 0.1nm$

Hence, the diameter of helium atom is 0.1 nm

Answer 2

Answer:

Diameter He = 0,1 nm.

Explanation:

Km to nm:

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

⇒ Diameter He = 0.1 nm