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Question

After identifying all the vials left out in the lab, your phone buzzes with a news notification. The headline says, “Scientists Discover a New Element with a Whopping 120 Protons”. How many valence electrons would this newly discovered element have? Use your knowledge of atomic number, Periodic Table arrangement, and electron behavior as evidence. Be sure to make a claim, present your evidence, and give your reasoning. [4 points]

Claim: [1 points]

Evidence: [1 points]

Reasoning: [2 points]

Answer 1

The last element in the periodic table, Oganesson has 118 protons. A element with 120 protons would have two more protons, which means that it would have two more electrons as well. The 120-proton element would be put under Ra which is a alkaline metal, and all alkaline metals have two valence electrons.