Circle the atom in each pair that has the largest atomic radius

Question

group A.Al b
Group B. S O
Group C. Br Cl
Group D. Na Al
Group E. O F
Group F. Mg Ca

Answer 1

Here are the atoms with the largest atomic radius from each group:

• Group A: Al (Aluminum has a larger atomic radius than B, boron)
• Group B: S (Sulfur has a larger atomic radius than O, oxygen)
• Group C: Br (Bromine has a larger atomic radius than Cl, chlorine; as you go down the group, atomic radius increases)
• Group D: Na (Sodium has a larger atomic radius than Al, aluminum)
• Group E: O (Oxygen has a larger atomic radius than F, fluorine; although both are small, oxygen is slightly larger as you move across the period)
• Group F: Ca (Calcium has a larger atomic radius than Mg, magnesium)

So, the answers are:

• Group A: Al
• Group B: S
• Group C: Br
• Group D: Na
• Group E: O
• Group F: Ca