Unit 4 Review (Electrons and Periodic Trends)

Which electron configuration belongs to Chlorine (Cl)?

• 1s² 2s² 2p⁶ 3s² 3p⁵
• 1s² 2s² 2p⁶ 3s² 3p⁶
• 1s² 2s² 2p⁶ 3s² 3p⁷

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc (Zn)

• Copper (Cu)

• Nickel (Ni)

• Germanium (Ge)

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Write the configuration for Phosphorus (P)

• 2s2 2p6 3s2 3p3

• 1s2 2s3 2p6 3p3

• 1s2 2s2 2p6 3s2 3p3

• 1s2 2s2 2p5 3s2 3p3

Tags

NGSS.HS-PS1-1

The electron configuration of an atom is 1s²2s²2p⁶.  The number of electrons in the atom is 

• 3
• 6
• 8
• 10

Tags

NGSS.HS-PS1-1

Electrons occupy orbitals of lowest energy first is part of what electron configuration rule?

• Hund’s Rule
• Aufbau Principle
  
• Pauli Exclusion Principle

What does Pauli exclusion principle state ?

• states that each electron occupies the lowest energy orbital available

• states that -no two electrons in the same orbital can have the same spin

• states that single electrons electrons with the same spin must occupy each-energy orbital before additional electrons with opposite spins can occupy the same orbitals

What is the maximum number of electrons that an S orbital can have?

• 1 electron

• 2 electrons

• 3 electrons

• 4 electrons

How many electrons can the d sublevel(orbital) hold?

• 8

• 10

• 2

• 4

How many valence electrons does Chlorine have?

• 5
• 2
• 7
• 5

Tags

NGSS.HS-PS1-1

Which of the following is a p block element?

• Ca
• Ar
• Re
• Au