What element is represented by the electron configuration [Kr] 5s² 4d¹⁰ 5p³?

The electron configuration [Kr] 5s² 4d¹⁰ 5p³ represents an element in the periodic table. This configuration indicates that the element has a total of 51 electrons, as the arrangement after the noble gas krypton ([Kr]) accounts for an additional 15 electrons (2 from 5s², 10 from 4d¹⁰, and 3 from 5p³).

To break it down:

• The [Kr] represents the electron configuration of krypton, which accounts for 36 electrons.

• The 5s² indicates that there are 2 electrons in the 5s subshell.

• The 4d¹⁰ indicates a filled 4d subshell with 10 electrons.

• Lastly, the 5p³ indicates that there are 3 electrons in the 5p subshell.

Adding these together gives 36 + 2 + 10 + 3 = 51 electrons. This matches the atomic number of antimony (Sb), which is known for having its electrons arranged in this manner.

In summary, the configuration [Kr] 5s² 4d¹⁰ 5p³ fits perfectly with the characteristics