If a gold atom has a radius of 145 pm and could string gold atoms like beads on a string, how many atoms would you need to have a necklace 36 cm (14.2 inches) long?
Based on the calculations, the number of gold atoms is equal to: B. 2.4 × 10⁹ Au atoms.
What is an atom?
An atom can be defined as the smallest, basic (fundamental) and indivisible unit which comprises the matter that forms all chemical elements.
The subatomic particles of elements.
Based on scientific information, the nucleus of an atom of any chemical element comprises three (3) distinct subatomic particles and these include the following;
Protons
Neutrons
Electrons
How to determine the number of atoms?
First of all, we would convert the value in picometer (pm) and centimeter (cm) to meters respectively.
145 pm = 145 × 10⁻¹² m
36 cm = 360 mm = 360 × 10⁻³ m.
Now, we can calculate the number of gold atoms as follows:
n = 360 × 10⁻³/145 × 10⁻¹²
n = 2.4 × 10⁹ Au atoms.
Read more on atoms here: brainly.com/question/377844
