Periodic Trends

Front

What is the atomic radius?

Back

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

Front

Which group in the periodic table contains the most active nonmetals?

Back

The halogens are the most active nonmetals in the periodic table.

Front

What happens to atomic radius 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 energy levels.

Front

Which group has the smallest atomic radius?

Back

Noble gases have the smallest atomic radius among the periodic groups.

Front

What is the trend in atomic radius across a period from left to right?

Back

Atomic radius decreases from left to right across a period due to increasing nuclear charge.

Front

What is the reason for the increase in atomic radius down a group?

Back

The increase in atomic radius down a group is due to the addition of more electron shells.

Front

Which element has the largest atomic radius in Group 1?

Back

Francium has the largest atomic radius in Group 1.

Front

What is the relationship between atomic radius and ionization energy?

Back

As atomic radius increases, ionization energy generally decreases because the outer electrons are further from the nucleus.

Front

What are noble gases known for in terms of reactivity?

Back

Noble gases are known for their lack of reactivity due to having a full valence shell.

Front

How does the atomic radius of metals compare to that of nonmetals?

Back

Metals generally have larger atomic radii than nonmetals.