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1s 2 2s 2 p 6 3s 2 p 6 d 10 4s 1. Electrons per Energy Level: 2,8,18,1. Shell Model. Powers of 10 project is to draw the atomic structures of copper (atomic number 29) and iron (atomic number 26) and then compare with alloys like brass, bronze, steel, and stainless steel.
One gram of copper contains 9.47 * 10^(21)atoms of copper The be able to determine the mass of an individual copper atom, you need to use copper's molar mass. Copper's molar mass expresses the mass of 1 mole of copper atoms. One mole of any substance contains exactly #6.022 * 10^(23)# atoms or molecules of that substance - this is known as Avogadro's number.