Sally is making a model of gold for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 70 protons to her model so far. how many more protons does she need to add to complete her neutral atom of gold?

Hello!

Sally will need to add 9 more protons to complete her neutral atom of gold.

Gold is a chemical element which has 79 protons and 79 electrons in its neutral state. Its electron configuration is [Xe]4f¹⁴5d¹⁰6s¹. In the Periodic Table, Gold is in group 11, among Copper and Silver, in the Transition Metals Zone. Sally added 70 protons, so she would need 9 more protons to complete the number of protons in gold. 

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Cis the