Periodic Trends

Front

What is ionization energy?

Back

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

Front

Which element has the lowest ionization energy in Group 1?

Back

Francium (Fr) has the lowest ionization energy in Group 1.

Front

What trend is observed in ionization energy as you move down a group in the periodic table?

Back

Ionization energy generally decreases as you move down a group due to increased atomic radius and electron shielding.

Front

What is atomic radius?

Back

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

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 in atomic radius as you move down a group?

Back

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

Front

Which element in Group 1A has the largest atomic radius?

Back

Cesium (Cs) has the largest atomic radius in Group 1A.

Front

What is the relationship between atomic mass and ionization energy?

Back

Generally, as atomic mass increases, ionization energy decreases, but this is not a strict rule due to other factors like electron configuration.

Front

What is the significance of valence electrons in determining ionization energy?

Back

Valence electrons are the outermost electrons and are involved in chemical bonding; the fewer the valence electrons, the lower the ionization energy.

Front

Which group 4A element has the highest ionization energy?

Back

Carbon (C) has the highest ionization energy in Group 4A.