Periodic Table and Trends

Front

What is the atomic radius?

Back

The atomic radius is a measure of the size of an atom, typically the distance from the nucleus to the outermost electron shell.

Front

Which atom has the largest atomic radius?

Back

Francium.

Front

How does atomic radius change 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 electron shells.

Front

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

Back

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

Front

What trend is observed in the number of valence electrons as you move from left to right across a period?

Back

The number of valence electrons increases.

Front

What is an element?

Back

An element is a pure substance consisting of only one type of atom, characterized by a specific number of protons.

Front

What is the main factor that determines atomic radius?

Back

The size of the electron cloud surrounding the nucleus.

Front

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

Back

Atomic radius decreases as you move up a group.

Front

What is the relationship between atomic radius and ionization energy?

Back

Generally, as atomic radius decreases, ionization energy increases because electrons are held more tightly by the nucleus.

Front

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

Back

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