Electron Configurations and the Periodic Table

What is the purpose of electron configurations in understanding the periodic table?

• To identify the number of protons in an atom

• To determine the atomic mass of an element

• To locate the electrons in an atom

• To find the number of neutrons in an atom

Which block of the periodic table does helium belong to for electron configurations?

• P block

• F block

• D block

• S block

What is the electron configuration for lithium?

• 1s2 2p1

• 1s2 2s1

• 1s2 2s2

• 1s1 2s1

How many electrons are in the outer shell of nitrogen?

• 5

• 3

• 2

• 7

Which element's electron configuration ends with 3p5?

• Calcium

• Sulfur

• Aluminum

• Chlorine

What is the noble gas notation for calcium?

• [Ne] 3s2 3p6 4s2

• [Ar] 4s2

• [Xe] 6s2

• [Kr] 5s2

Which noble gas is used in the shorthand notation for silicon?

• Argon

• Neon

• Xenon

• Krypton

What is the noble gas notation for antimony?

• [Kr] 5s2 4d10 5p3

• [Xe] 6s2 5d10 6p3

• [Ne] 3s2 3p3

• [Ar] 4s2 3d10 4p3

Which element's electron configuration ends with 5d10?

• Polonium

• Antimony

• Krypton

• Mercury

What is the final electron configuration for polonium?

• 6s2 5d10 6p4

• 6s2 4d10 5p4

• 6s2 5d10 6p6

• 5s2 4d10 5p4