Orbital Diagrams and Electron Configurations Quiz

What is the electron configuration for phosphorus?

• 1s2 2s2 2p6 3s2 3p4

• 1s2 2s2 2p5 3s2 3p3

• 1s2 2s2 2p6 3s1 3p3

• 1s2 2s2 2p6 3s2 3p3

What is the purpose of an orbital diagram?

• To predict the color of compounds.

• To model the arrangement of electrons in an atom.

• To determine the mass of an atom.

• To calculate the energy levels of an atom.

How many orbitals does a p sublevel have?

• 1

• 3

• 5

• 7

How many electrons can an s orbital hold?

• 3

• 4

• 2

• 1

According to Hund's Rule, how do electrons fill orbitals?

• Electrons fill the lowest energy orbitals first.

• Electrons fill orbitals with opposite spins.

• Electrons fill empty orbitals before pairing up.

• Electrons fill orbitals in pairs first.

What is the significance of having three empty orbitals in phosphorus?

• It makes phosphorus a noble gas.

• It prevents phosphorus from forming any bonds.

• It allows phosphorus to form ionic bonds.

• It enables phosphorus to form covalent bonds by sharing electrons.

Why is water's chemical formula H2O and not HO or H3O?

• Because oxygen has two empty orbitals to share with hydrogen.

• Because hydrogen has two electrons to share with oxygen.

• Because hydrogen can only bond with one oxygen.

• Because oxygen can only bond with two hydrogens.

What is the simplest electron configuration for hydrogen?

• 2s1

• 1s1

• 1s2

• 2p1

What happens when electrons share orbitals in a compound?

• They become unstable.

• They lose energy.

• They gain energy.

• They feel as if their orbitals are filled.

What is a possible compound that phosphorus can form with hydrogen?

• H2P

• HP

• H3P

• H4P