Periodic Trends

Front

What is the trend of atomic radius across a period and down a group?

Back

Atomic radius decreases across a period and increases down a group.

Front

Which element has the highest electronegativity?

Back

Fluorine has the highest electronegativity.

Front

Why do atoms get smaller as you move across the periodic table?

Back

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

Front

Which element has the smallest ionization energy: Magnesium (Mg), Sodium (Na), Potassium (K), or Calcium (Ca)?

Back

Potassium (K) has the smallest ionization energy.

Front

Which element has the greatest atomic radius: K, Ca, Zn, or Kr?

Back

Potassium (K) has the greatest atomic radius.

Front

Define electronegativity.

Back

Electronegativity is the ability of an atom to attract electrons in a chemical bond.

Front

What happens to ionization energy as you move across a period?

Back

Ionization energy generally increases as you move across a period.

Front

What is the trend of electronegativity down a group?

Back

Electronegativity generally decreases as you move down a group.

Front

Explain why ionization energy decreases down a group.

Back

Ionization energy decreases down a group because the outer electrons are farther from the nucleus and experience more shielding from inner electrons.

Front

What is the relationship between atomic size and ionization energy?

Back

As atomic size increases, ionization energy decreases.