Periodic Trends

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 generally increases down a group and decreases across a period.

Front

Which element has the largest atomic radius in the periodic table?

Back

Cesium (Cs) has the largest atomic radius among the elements.

Front

What trend occurs in atomic radius as you move down a group in the periodic table?

Back

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

Front

What trend occurs in atomic radius as you move across a period from left to right?

Back

The atomic radius decreases as you move across a period from left to right due to increased nuclear charge pulling electrons closer.

Front

What is electronegativity?

Back

Electronegativity is the ability of an atom to attract electrons in a chemical bond. It generally increases across a period and decreases down a group.

Front

What trend occurs in electronegativity as you move down a group in the periodic table?

Back

Electronegativity decreases as you move down a group.

Front

What trend occurs in electronegativity as you move across a period from left to right?

Back

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

Front

What happens to metals during chemical reactions in terms of electrons?

Back

Metals tend to lose electrons during chemical reactions, forming positive ions called cations.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state. It generally increases across a period and decreases down a group.

Front

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

Back

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