10. Periodic Properties of the Elements

Which of the following is the correct electron configuration for tin (Sn)?

Given the following orbital diagram (core electrons not shown): ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ 3s 3p 4s 3d What element is designated by this orbital diagram?

Which of the following best represents the orbital diagram for a ground-state oxygen atom?

Which of the following elements has the electron configuration 1s^2 2s^2 2p^6 3s^2 3p^6 3d^5?

Which of the following statements is correct regarding the number of electrons in potassium (K) and argon (Ar)?

Which of the following is the correct electron configuration for gallium (Ga)?

Which of the following is the correct electron configuration for magnesium (atomic number 12)?

Which of the following is the electron configuration of a neutral potassium (K) atom?

Which of the following represents the ground state electron configuration of calcium (Ca)?

Which of the following represents the ground state electron configuration of boron (B)?

Which of the following represents the electron configuration for the valence electrons in strontium (Sr)?

Which element in the ground state has exactly 3 electrons in the 2p sublevel?

How many d orbitals are present when the principal quantum number n = 4?

Which of the following is the correct electron configuration for gallium (Ga)?

In an atom, where are the lowest electron energy levels located?