10. Periodic Properties of the Elements

Which of the following is the correct electron configuration for a neutral sodium (Na) atom?

How many electrons can the second and third energy levels hold before they are full?

Which principal quantum number (n) corresponds to the lowest possible energy level that an electron can occupy in an atom?

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

What is the electron configuration for a neutral atom of titanium?

Which of the following orbital electron configurations is not possible?

Which of the following represents the electron configuration for the valence electrons in a chlorine atom?

Which of the following correctly represents the electron configuration for a neutral germanium (Ge) atom using an orbital diagram?

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

Write the electron configuration of the following elements

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

Which of the following is the correct orbital diagram for a nitrogen atom (atomic number 7)?

Which one of the following species has the electron configuration 1s22s22p6?

Which of the following represents the correct electron configuration for a neutral atom of vanadium (atomic number 23)?