Multiple Choice
What is the most likely reason that Mendeleev placed tellurium before iodine in his periodic table?
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2. Atoms & Elements
Periodic Table: Charges
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Which of the following elements has the greatest number of protons in its nucleus?
A
Lead (Pb)
B
Oganesson (Og)
C
Gold (Au)
D
Uranium (U)
Verified step by step guidance1
Recall that the number of protons in the nucleus of an element is equal to its atomic number, which uniquely identifies the element on the periodic table.
Look up the atomic numbers of each element given: Lead (Pb), Oganesson (Og), Gold (Au), and Uranium (U).
Compare the atomic numbers to determine which element has the highest value, as the highest atomic number corresponds to the greatest number of protons.
Remember that elements are arranged in order of increasing atomic number on the periodic table, so the element with the largest atomic number will have the most protons.
Conclude that the element with the greatest atomic number among the options is the one with the greatest number of protons in its nucleus.
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