Electron Configuration of Elements

What does the electronic configuration describe?

• The arrangement of atoms in a molecule

• The arrangement of neutrons in an atom

• The arrangement of electrons in an atom's orbitals

• The arrangement of protons in an atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which principle states that electrons fill the lowest energy orbitals first?

• Aufbau Principle

• Heisenberg Uncertainty Principle

• Hund's Rule

• Pauli Exclusion Principle

What is the maximum number of electrons that a p subshell can hold?

• 14

• 10

• 6

• 2

What is the principal quantum number (n) used to indicate?

• The type of subshell

• The shape of the orbital

• The energy level or shell

• The spin of the electron

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

• Electrons pair up in each orbital before moving to the next

• Electrons fill the highest energy orbitals first

• Electrons occupy separate orbitals within a subshell before pairing up

• Electrons fill orbitals randomly

How many orbitals are there in a d subshell?

• 7

• 5

• 3

• 1

What is the electron configuration notation for the 2s orbital with 2 electrons?

• 2s¹

• 2s²

• 2s³

• 2s⁴

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which subshell can hold a maximum of 14 electrons?

• p subshell

• s subshell

• d subshell

• f subshell

What is the first step in writing an electron configuration?

• Write the notation

• Fill orbitals

• Find the atomic number

• Determine the order of fill

What is the second step in writing an electron configuration?

• Find the atomic number

• Write the notation

• Fill orbitals

• Determine the order of fill