Question

Which of the following elements has the highest atomic number?

• A. Uranium
• B. Neptunium
• C. Plutonium
• D. Rutherfordium

Hint:

The atomic number of an element increases with the addition of protons to its nucleus, so check periodic tables for the latest elements.

Answer 1

The Correct Option is D

The atomic numbers of the elements are:
- Uranium (U) has an atomic number of 92.
- Neptunium (Np) has an atomic number of 93.
- Plutonium (Pu) has an atomic number of 94.
- Rutherfordium (Rf) has an atomic number of 104.
Thus, Rutherfordium has the highest atomic number among the options.
Therefore, the correct answer is: \[ \boxed{(D) \, \text{Rutherfordium}} \]