Periodic Trends

Front

What is the atomic radius?

Back

The atomic radius is one-half the distance between the nuclei of identical atoms that are bonded together.

Front

Which element has the largest atomic radius in Group 18?

Back

Radon (Rn) has the largest atomic radius in Group 18.

Front

What happens to atomic radius as you move down a group in the periodic table?

Back

Atomic radius increases as you move down a group due to the addition of more shells (energy levels).

Front

What is ionization energy?

Back

Ionization energy is the amount of energy required to remove an electron from an atom.

Front

Which element has the smallest ionization energy in Period 6?

Back

Cesium (Cs) has the smallest ionization energy in Period 6.

Front

How does atomic radius change across a period from left to right?

Back

Atomic radius decreases across a period from left to right due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

What is the trend of ionization energy as you move down a group?

Back

Ionization energy generally decreases as you move down a group due to increased distance of the outer electrons from the nucleus.

Front

What is the trend of electronegativity as you move across a period?

Back

Electronegativity increases as you move across a period from left to right.

Front

What is electronegativity?

Back

Electronegativity is the ability of an atom to attract electrons in a chemical bond.

Front

What is the relationship between atomic size and metallic character?

Back

As atomic size increases, metallic character increases.