An atom of silver has a radius of and the average orbital speed of the electrons in it is about . calculate the least possible uncertainty in a measurement of the speed of an electron in an atom of silver. write your answer as a percentage of the average speed, and round it to significant digits.

Percentage of uncertainty in average speed of an electron is 0.1756%.

Explanation:

Using Heisenberg uncertainty principle:

Δx = Uncertainty in position

Δp = Uncertainty in momentum

Δv = Uncertainty in average speed

h = Planck's constant =

m = mass of electron =  

We have

Δx = 2 × 165 pm = 330 pm =

Average orbital speed of electron = v =

Percentage of uncertainty in average speed:

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements