Final answer:
Among the elements listed, Uranium has the highest atomic number at 92. The atomic numbers of the other elements are 20 for Calcium, 14 for Silicon, and 30 for Zinc. Therefore, Uranium is the correct answer.
Explanation:
Identifying the Element with the Highest Atomic Number
To determine which element has the highest atomic number among the given options, we must first find the atomic numbers of each element:
- Calcium (Ca): Atomic number 20
- Silicon (Si): Atomic number 14
- Zinc (Zn): Atomic number 30
- Uranium (U): Atomic number 92
Now, comparing these atomic numbers, we can see that the element with the highest atomic number is Uranium, which has an atomic number of 92. This means that Uranium is the heaviest among the elements listed in terms of atomic structure. Atomic numbers are important as they define the number of protons in an atom, which determines the element’s properties and category in the periodic table.
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