Question

Electron Configuration: Know shapes and How many orbitals and electrons in each sublevel. Write electron configurations for… a. sodium b. iodine c. iron

Answer 1

Answer: (Numbers to the right of the letters are suppose to be to the power of. e.g. 1s^2)

For Sodium (Na): The electron configuration is "1s2 2s2 2p6 3s1". The 3s sublevel has 1 orbital and can hold 1 electron.

For Iodine (I): The electron configuration is "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5". The s sublevel has 1 orbital and can hold 2 electrons, the p sublevel has 3 orbitals and can hold 6 electrons, the d sublevel has 5 orbitals and can hold 10 electrons, and the 4p sublevel has 1 orbital and can hold 5 electrons.

For Iron (Fe): The electron configuration is "1s2 2s2 2p6 3s2 3p6 4s2 3d6". The s sublevel has 1 orbital and can hold 2 electrons, the p sublevel has 3 orbitals and can hold 6 electrons, and the d sublevel has 5 orbitals and can hold 6 electrons.