The radius of a potassium atom is 231 pm. how many potassium atoms would have to be laid side by side to span a distance of 4.77 mm?

2.06× atoms

Explanation:

The radius of potassium atoms= 231 pm

convert parts per million into m i.e, by multiplying by

= 231×

Potassium atoms would have to laid down at a distance apart= 4.77 mm

convert millimeter into meter i.e, by multiplying by

= 4.77 ×

Now, we have to find the number of potassium atoms,

Number of potassium atoms=

Number of potassium atoms=2.06×

Number of potassium atoms=  2.06× atoms

Hence, the correct answer is  2.06× atoms