Question

the symbol for xenon (xe) would be a part of the noble gas notation for the element
○ antimony.
○ cesium.
○ radium.
○ uranium.

Explanation:

To determine which element uses Xe in noble gas notation, we check atomic numbers: Xe (atomic number 54). Antimony (Sb) has atomic number 51 (uses Kr), cesium (Cs) has atomic number 55 (electron configuration starts after Xe, so noble gas notation is [Xe] 6s¹), radium (Ra) has atomic number 88 (uses Rn), uranium (U) has atomic number 92 (uses Rn). So cesium uses Xe in its noble gas notation.

Answer:

B. cesium.