Effective Nuclear Charge and Atomic Radius

Front

What happens to atomic size as you move down the periodic table?

Back

Atomic size increases because atoms have more energy levels.

Front

Which element has the smallest atomic radius?

Back

Neon (Ne) has the smallest atomic radius.

Front

Which element has the largest atomic radius?

Back

Sulfur (S) has the largest atomic radius among oxygen, fluorine, sulfur, and chlorine.

Front

What is the effective nuclear charge?

Back

The effective nuclear charge is less than the actual nuclear charge due to shielding by inner electrons.

Front

What are core electrons?

Back

Core electrons are the electrons in the inner shells of an atom, not involved in bonding.

Front

How does effective nuclear charge affect atomic radius?

Back

As effective nuclear charge increases, atomic radius decreases because electrons are pulled closer to the nucleus.

Front

What is the trend of atomic radius across a period?

Back

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

Front

What is the relationship between atomic radius and ionization energy?

Back

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

Front

What is the formula for calculating effective nuclear charge (Z_eff)?

Back

Z_eff = Z - S, where Z is the atomic number and S is the shielding constant.

Front

What is the shielding effect?

Back

The shielding effect occurs when inner electrons block the attraction between the nucleus and outer electrons.