Exploring Electron Configuration

What is the electron configuration of hydrogen?

• 1s1

• 2s1

• 1p1

• 1s2

How many electrons can the first energy level hold?

• 1

• 4

• 2

• 8

What is the electron configuration for carbon?

• 1s² 2s² 2p¹

• 1s² 2s² 2p⁴

• 1s² 2s² 2p²

• 1s² 2s¹ 2p²

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

• Quantum mechanical model

• Aufbau principle

• Pauli exclusion principle

• Hund's rule

What is the electron configuration of sodium?

• 1s² 2s² 3s²

• 1s² 2s² 2p⁶ 3p¹

• 1s² 2s² 2p⁶ 3s¹

• 1s² 2s¹ 2p⁶ 3s¹

How do you determine the number of valence electrons in an element?

• Valence electrons can be calculated using the element's electron affinity.

• The number of valence electrons is the same for all elements in a period.

• The number of valence electrons is determined by the atomic mass of the element.

• The number of valence electrons is determined by the group number of the element in the periodic table.

What is the electron configuration for chlorine?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁴

• 1s² 2s² 2p⁶ 3s² 3p³

What is the significance of the Aufbau principle in electron configuration?

• It states that electrons can occupy any energy level freely.

• It describes the maximum number of electrons in an atom.

• The significance of the Aufbau principle in electron configuration is that it provides a systematic way to determine the arrangement of electrons in an atom, ensuring that the lowest energy states are filled first.

• It explains the behavior of protons in the nucleus.

How many orbitals are in the p subshell?

• 4

• 1

• 2

• 3

What is the electron configuration for an element with atomic number 26?

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁷

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d⁶