THIS USER ASKED 👇
Which element has the smallest atomic radius? calcium potassium scandium titanium
THIS IS THE BEST ANSWER 👇
The element with the smallest atomic radius is titanium
The periodic table contains calcium, potassium, scandium and titanium in phase 4. The atomic radius usually decreases during the period (from left to right). This is because the increase in nuclear charge during the period results in the strong attraction of electrons to the nuclear. Titanium is at atomic number 22 so it has a greater nuclear charge that calcium, potassium and scandium have the smallest atomic radius.