Atomic Radius

Front

What is atomic radius?

Back

The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

Which element has the largest atomic radius: Thallium, Indium, Gallium, or Boron?

Back

Thallium has the largest atomic radius among these elements.

Front

How does atomic radius change across a period in the periodic table?

Back

Atomic radius decreases from left to right across a period due to increasing nuclear charge.

Front

How does atomic radius change down a group in the periodic table?

Back

Atomic radius increases down a group due to the addition of electron shells.

Front

Which element is smaller: Indium (In) or Gallium (Ga)?

Back

Gallium (Ga) is smaller than Indium (In).

Front

What happens to the atomic radius as the number of protons increases?

Back

As the number of protons increases, the atomic radius generally decreases due to a stronger nuclear pull on the electrons.

Front

Which element has a larger atomic radius: Potassium (K) or Cesium (Cs)?

Back

Cesium (Cs) has a larger atomic radius than Potassium (K).

Front

True or False: Size decreases as you go down a group in the periodic table.

Back

False. Size increases as you go down a group.

Front

What is the trend of atomic radius in relation to electron shielding?

Back

Increased electron shielding reduces the effective nuclear charge felt by outer electrons, leading to a larger atomic radius.

Front

Define effective nuclear charge.

Back

Effective nuclear charge is the net positive charge experienced by an electron in a multi-electron atom, accounting for shielding from other electrons.