10. Periodic Properties of the Elements

Which element has a ground state electron configuration of [Ar] 4s2 3d10?

Which element has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^4?

Which of the following is the correct electron configuration for nobelium (No, atomic number 102)?

Which element has the following ground state electron configuration: 1s^2 2s^2 2p^6 3s^2 3p^5?

Which of the following represents the valence electron configuration for a boron atom?

Which element has the ground state electron configuration 1s^2 2s^2 2p^6 3s^2 3p^1?

Which of the following represents the correct electron configuration for a neutral atom of cobalt (atomic number 27)?

Which of the following represents the ground-state electron configuration of sulfur (S)?

Which of the following electron configurations represents a potassium atom (K) in an excited state?

Which of the following represents the correct electron configuration for a neutral atom of helium?

Which of the following is the correct electron configuration for indium (atomic number 49)?

Which of the following represents the correct electron configuration for a neutral atom of argon?

How many electrons are present in the electron cloud of a neutral carbon atom?

Which of the following is the correct electron configuration for aluminum (Al)?

Which of the following is the correct electron configuration for a nitrogen atom?