Periodic trends review

Front

What is atomic radius?

Back

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

Front

Which element has the largest atomic radius in a group?

Back

The atomic radius generally increases as you move down a group in the periodic table due to the addition of electron shells.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

Which element has a higher ionization energy: Magnesium or Phosphorus?

Back

Phosphorus has a higher ionization energy than Magnesium.

Front

What happens to atomic radius as you move from left to right across a period?

Back

The atomic radius decreases as you move from left to right across a period due to increasing nuclear charge.

Front

What is electron affinity?

Back

Electron affinity is the amount of energy released when an electron is added to a neutral atom to form a negative ion.

Front

How does electron affinity change across a period?

Back

Electron affinity generally increases as you move from left to right across a period.

Front

What is the trend of atomic radius in Period 4?

Back

In Period 4, the atomic radius increases from right to left.

Front

Why does atomic radius increase down a group?

Back

Atomic radius increases down a group because additional electron shells are added, increasing the distance between the nucleus and the outermost electrons.

Front

What is the relationship between atomic radius and ionization energy?

Back

Generally, as atomic radius increases, ionization energy decreases because the outer electrons are further from the nucleus and are less tightly held.