Chem 4.4 Parts 4 & 5 Combined

What is the highest filled subshell for elements in the s block of the periodic table?

• p subshell

• d subshell

• s subshell

• f subshell

Which groups of the periodic table are included in the s-block?

• Groups 1 and 2

• Groups 3 through 12

• Groups 13 through 18

• Lanthanides and actinides

Explain why the electron configuration of chromium (Cr) is an exception to the expected pattern.

• Chromium has a filled d sublevel.

• Chromium has a half-filled d sublevel, which is more stable.

• Chromium has a filled s sublevel.

• Chromium has a half-filled s sublevel, which is more stable.

How can noble gas configurations simplify writing electron configurations?

• By representing all electrons as core electrons

• By using noble gases to represent core electrons

• By showing only the valence electrons

• By using noble gases to represent valence electrons

What is the noble gas configuration for sulfur (S)?

• [He]2s²2p⁶3s²3p⁴

• [Ne]3s²3p⁴

• [Ar]3s²3p⁴

• [Kr]3s²3p⁴