Chemistry Final Sem1

Which is the best word that describes a quantum? 

• wave

• energy

• orbital

• frequency

What is the model of the atom that says that the electron cloud has probable places to find electrons?

• Quantum reality model

• Bohr model

• Rutherford model

• Quantum mechanical model

Which is the correct description for the highest sublevel for energy level 3?!

• Energy level 3 has 3 sublevels; the highest energy sublevel is d, with 5 orbitals.

• Energy level 3 has 2 sublevels; the highest energy sublevel is d, with 5 orbitals.

• Energy level 3 has 3 sublevels; the highest energy sublevel is f, with 7 orbitals.

• Energy level 3 has 2 sublevels; the highest energy sublevel is p, with 3 orbitals.

What is the shape for the p subshell orbitals? 

• dumbbell

• spherical

• ring

• clover

What determines the shape of the periodic table?

• quantum structures of the nucleus

• nuclear fission

• electron configurations

• Plank’s constant

Which is the short-hand electron configuration for potassium? 

• [Ar]4s²

• 1s²2s²2p⁶4s¹

• 1s²2s²2p⁶3s²3p⁶4s¹

• [Ar]4s¹

Which element is this electron configuration best representing?

1s²2s²2p⁶3s²3p⁶4s²3d⁷

• Y

• O

• Co

• Fe

Which element  or ion could NOT have this electron configuration?

1s²2s²2p⁶3s²3p⁶

• Br-

• Ar

• Cl^-

• S^2-

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

• [Kr]5s²4d⁹

• [Ar]5s²4d⁹

• [Kr]5s¹4d¹⁰

• [Ar]5s¹4d¹⁰

Which statement best describes the Aufbau principle? 

• Protons will fill the lowest energy orbitals in the electron cloud first.

• Electrons will fill the lowest energy orbitals in the electron cloud first.

• Protons will fill the highest energy orbitals in the electron cloud first.

• Electrons will fill the highest energy orbitals in the electron cloud first.