Question

1. choose the best answer.

what is the shorthand electron configuration for polonium?
rn 6s²
rn 6s²4f¹⁴5d⁷
xe 6s²4f¹⁴5d¹⁰6p²
xe 6s²4f¹⁴5d¹⁰6p⁴

Explanation:

• Polonium has an atomic number of 84.
• The noble gas before polonium in the periodic table is xenon (Xe) with an atomic number of 54.
• After [Xe], the electron configuration is filled as follows: 6s² (2 electrons), 4f¹⁴ (14 electrons), 5d¹⁰ (10 electrons), and 6p⁴ (4 electrons). The total number of electrons from [Xe] (54) plus 6s² (2) + 4f¹⁴ (14) + 5d¹⁰ (10) + 6p⁴ (4) gives \(54 + 2+14 + 10+4=84\), which is the atomic number of polonium.

Answer:

[Xe] \(6s^{2}4f^{14}5d^{10}6p^{4}\)