Question

Help please, thank you:)

Answer 1

1.67 × 10⁻¹⁰m is the answer.

Step-by-step explanation:

Given,

4 × 10⁻⁷m thick

2400 atoms thick

therefore 1 atom,

Diameter = 4 × 10⁻⁷/2400

d = 4000 × 10⁻¹⁰/2400

d = 1.67 × 10⁻¹⁰m

∴ diameter of 1 gold atom (3 significant figures) = 1.67 × 10⁻¹⁰m