10. Periodic Properties of the Elements

Which atom has the electron configuration 1s2 2s2 2p6 3s2 3p6?

Which element has a total of five occupied principal energy levels?

In a multi-electron atom, which of the following orbitals will have the highest energy?

How many electrons can an atom have in its first electron shell (n = 1)?

1s^2 2s^2 2p^6 3s^2 3p^6 4s^1 is the electron configuration for which element?

Consider the following electron configurations. Which atom is expected to be the most stable?A) 1s^2 2s^2 2p^6B) 1s^2 2s^2 2p^5C) 1s^2 2s^2 2p^4D) 1s^2 2s^2 2p^3

Which element has the electron configuration 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5?

Which of the following is the correct electron configuration for the bromide ion, Br−?

Which of the following represents the ground-state electron configuration for cesium (Cs)?

Which of the following is the correct electron configuration for boron (B)?

Which of the following is the correct electron configuration for selenium (Se)?

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

Which of the following is the correct electron configuration for a neutral lithium (Li) atom?

Which species has the electron configuration [Ar] 3d^2?

Which of the following is the correct electron configuration for argon (Ar)?