Periodic Trends

Front

What happens to atomic size as you move across the periodic table from left to right?

Back

Atoms tend to get smaller because they have more protons, which increases the positive charge in the nucleus and pulls the electrons closer.

Front

Define electronegativity.

Back

Electronegativity is the ability of an atom to attract and accept electrons.

Front

What trend occurs in metallic character as you move across a period in the periodic table?

Back

The metallic character of the elements decreases.

Front

Which element is more electronegative: Cl or K?

Back

Cl (Chlorine) is more electronegative than K (Potassium).

Front

Which element has the largest atomic radius: Mg, B, S, or Br?

Back

Mg (Magnesium) has the largest atomic radius.

Front

What is the trend 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

Explain why ionization energy generally increases across a period.

Back

Ionization energy increases across a period because the increasing nuclear charge holds the electrons more tightly, making them harder to remove.

Front

What is the relationship between electronegativity and ionization energy?

Back

Generally, elements with high electronegativity also have high ionization energy, as both are related to the ability to attract and hold onto electrons.

Front

What is the trend in reactivity for metals as you move down a group?

Back

The reactivity of metals increases as you move down a group.

Front

What is the trend in reactivity for nonmetals as you move down a group?

Back

The reactivity of nonmetals decreases as you move down a group.