Periodic TRENDS REVIEW (plus more!)

Front

Why is the atom of potassium bigger than the atom of sodium?

Back

Potassium has more energy levels.

Front

What property increases across the period (left to right)?

Back

Effective nuclear charge.

Front

Why will the ionization energy of Cl be higher than S?

Back

Cl has higher effective nuclear charge.

Front

Define first ionization energy.

Back

The energy required to remove an electron from a gaseous atom.

Front

Which species has the biggest ionic radius: Sr²⁺, Te²⁺, I⁻, or Cs⁺?

Back

Cs⁺.

Front

What is electron shielding?

Back

The phenomenon where inner electrons reduce the effective nuclear charge felt by outer electrons.

Front

How does atomic radius change across a period?

Back

Atomic radius decreases from left to right across a period.

Front

What is the trend of ionization energy down a group?

Back

Ionization energy decreases down a group.

Front

What is effective nuclear charge?

Back

The net positive charge experienced by an electron in a multi-electron atom.

Front

What happens to the electronegativity of elements as you move across a period?

Back

Electronegativity increases from left to right.