Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

Which of the following element is a group I element?
Options
A hydrogen
B radium
C caesium
Correct Answer
D antimony
Correct Answer

Option C is the correct answer.

Detailed Explanation

Caesium (Cs) is in Group 1 (alkali metals). Hydrogen is sometimes placed in Group 1 but is not an alkali metal. Radium is Group 2, antimony is Group 15.

Hint

Group I = alkali metals.

Question Info