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Hydrogen has the smallest atomic radius - 25 pm.

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Hydrogen lithium and sodium all have one valence electron Which element has the smallest atomic radius?

Among hydrogen, lithium, and sodium, hydrogen has the smallest atomic radius because it has the fewest number of electron shells and the smallest number of electrons, leading to a smaller atomic size.


Who of these has the smallest radius Lithium Oxygen Potassium or Sulfur?

Lithium has the smallest atomic radius among the elements listed.


Which element has the smallest atomic radius hydrogen or helium?

It is hydrogen.


What elements have the smallest atomic radius in group 1?

The element in group 1 with the smallest atomic radius is lithium, due to its higher nuclear charge compared to the other elements in the group (such as sodium and potassium). This higher nuclear charge attracts the electrons more strongly, leading to a smaller atomic radius.


Which of these elements has the smallest atomic radius?

The answer choices for this question wasn't provided. Oxygen has the smallest atomic radius. The higher the electronegativity in an element makes the atomic radius smaller.


What is the shortest atomic radius of an element?

Helium usually is listed with the smallest atomic radius when calculated. Hydrogen however has a smaller van der Waals radius


What element has the smallest atomic radius?

Helium usually is listed with the smallest atomic radius when calculated. Hydrogen however has a smaller van der Waals radius The protium isotope of hydrogen has the smallest nucleus radius. It is 1.6 fm


Which of the given elements has the smallest atomic radius in 3rd period in periodic table?

Lithium(520)


Which element has the smallest anion radius?

Fluorine has the smallest anion radius among the elements.


What is the atomic radius of lithium in angstroms?

The atomic radius of lithium is approximately 1.23 angstroms.


Which atom is the smallest among lithium and fluorine?

The smallest atom is lithium, as it has a smaller atomic radius compared to fluorine. This is because as you move across a period on the periodic table, atomic radius decreases due to increased nuclear charge pulling the electrons closer to the nucleus.


What element have the smallest atomic radius?

Atomic Radius gets greater down the periodic table and gets smaller to the right in the periodic table. This means, in order of atomic radius, that the five smallest elements are Helium, Neon, Fluorine, Oxygen, and Hydrogen in that order. Check all of it out at http://www.ptable.com/ under properties>radius