Writing Electron Configurations with the Periodic Table

What is the first step in finding the electron configuration of an element?

• Locate the element's group

• Identify the number of neutrons

• Find the number of electrons

• Determine the element's mass

What does the atomic number of an element represent?

• Number of protons

• Both protons and electrons

• Number of electrons

• Number of neutrons

Which group in the periodic table ends in s1?

• Group 4

• Group 1

• Group 2

• Group 3

What is the electron configuration ending for elements in group 2?

• p2

• s1

• s2

• p1

What is the electron configuration for Boron?

• 1s2 2s2 2p1

• 1s2 2s2 2p2

• 1s2 2s1 2p2

• 1s1 2s2 2p1

In which period is Boron located?

• Period 4

• Period 1

• Period 3

• Period 2

What is the electron configuration for Chlorine?

• 1s2 2s2 2p6 3s2 3p5

• 1s2 2s2 2p6 3s2 3p6

• 1s2 2s2 2p6 3s1 3p5

• 1s2 2s2 2p6 3s2 3p4

In which period is Chlorine located?

• Period 4

• Period 3

• Period 2

• Period 1

What is the electron configuration for Vanadium?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d3

• 1s2 2s2 2p6 3s2 3p6 4s2 4d3

• 1s2 2s2 2p6 3s2 3p6 4s1 3d3

• 1s2 2s2 2p6 3s2 3p6 4s2 3d2

What is the exception rule for the d block in electron configurations?

• Halve the period number

• Double the period number

• Subtract one from the period number

• Add one to the period number