Atomic Radius and Ionization Energy - Chemistry

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

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

Back

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

Front

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

Back

Atomic radius increases down a group because additional electron shells are added, making the atom larger.

Front

What is ionization energy?

Back

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

Front

How does ionization energy change across a period?

Back

Ionization energy generally increases across a period from left to right due to increased nuclear charge.

Front

How does ionization energy change down a group?

Back

Ionization energy decreases down a group because the outer electrons are further from the nucleus and are less tightly held.

Front

Which element has the highest ionization energy: He, Ne, Ar, or Kr?

Back

He (Helium) has the highest ionization energy among these elements.

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.

Front

What is the trend of ionization energy for alkali metals?

Back

Ionization energy decreases as you move down the group of alkali metals (Group 1) in the periodic table.

Front

Which element has the smallest atomic radius: Li, Na, K, or Rb?

Back

Li (Lithium) has the smallest atomic radius among these elements.