Question

the radius of a palladium atom is 137 pm. how many palladium atoms would have to be laid side by side to span a distance of 4.25 mm?

Answer 1

4.25mm / 137pm = 31 021 897.8

Answer 2

`1.551* 10^7` atoms of palladium are to be laid side by side to span a distance of 4.25 mm.

Step-by-step explanation:

The radius of the palladium atom, r = 137 pm

Diameter of the palladium atom = 2r = 137 pm = 274 pm

Let the number of palladium atoms laid side by side be x

Length of the chain = 4.25 mm =
`4.25* 10^9 pm`

`1 mm = 10^9 pm`

`x* 274 pm =4.25* 10^9 pm`

`x=(4.25* 10^9 pm)/(274 pm)=1.551* 10^7`

`1.551* 10^7` atoms of palladium are to be laid side by side to span a distance of 4.25 mm.