Question

Which element has the smallest atomic radius? calcium potassium scandium titanium

Answer 1

Which element has the smallest atomic radius?

❌calcium

❌potassium

❌scandium

✔titanium

Answer 2

The element that has the smallest atomic radius is titanium

Step-by-step explanation

• Calcium,potassium, scandium and titanium are in period 4 in the periodic table.

• Generally the atomic radius decreases across the period (from the left to the right) . This is because across the period there is increase in nuclear charge which make electrons been strongly attracted to the nuclear.

• Titanium is in atomic number 22 thus it has more nuclear charge that calcium,potassium and scandium therefore titanium has the smallest atomic radius.