Mystery Message Worksheet: Electron Configuration

Instructions: Decode the mystery message by answering the questions and filling in the blanks with the correct electron configuration.

1. What is the atomic number of the element with the electron configuration 1s²2s²2p⁶3s²3p⁴?

Answer: The atomic number is 34.

1. What is the shorthand notation for the electron configuration of the element with the electron configuration 1s²2s²2p⁶3s²3p⁴?

Answer: The shorthand notation is [Ar]3d¹⁰4s²4p⁴.

1. What is the electron configuration of the element with the shorthand notation [Kr]5s¹⁰4d⁵?

Answer: The electron configuration is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s¹⁰4d⁵.

1. What is the atomic number of the element with the electron configuration 1s²2s²2p⁶3s²3p⁶4s¹?

Answer: The atomic number is 18.

1. What is the electron configuration of the element with the atomic number 47?

Answer: The electron configuration is [Kr]5s¹⁰4d¹⁰5p¹.