Do Now - AP - Periodic Trends

Front

What is Coulomb's Law?

Back

Coulomb's Law describes the force of attraction or repulsion between two charged particles, which is directly proportional to the product of the magnitudes of their charges and inversely proportional to the square of the distance between them.

Front

What variable has the greatest effect on the force of attraction according to Coulomb's Law?

Back

The distance (r) between charged particles has the greatest effect on the force of attraction.

Front

Which element is the most electronegative?

Back

Nitrogen is the most electronegative element among nitrogen, phosphorus, arsenic, and lithium.

Front

What is electron affinity?

Back

Electron affinity is the amount of energy released when an electron is added to a neutral atom to form a negative ion.

Front

Which element has the greatest electron affinity among Na, Cl, Ba, and Al?

Back

Chlorine (Cl) has the greatest electron affinity to form negative ions.

Front

What does ionization energy refer to?

Back

Ionization energy is the energy required to remove an electron from an atom or ion.

Front

How can you determine the number of valence electrons from ionization energies?

Back

The number of valence electrons can be determined by identifying the point at which there is a significant increase in ionization energy, indicating that all valence electrons have been removed.

Front

Order the following elements by increasing ionization energy: Sodium, Boron, Oxygen.

Back

The order is Sodium, Boron, Oxygen.

Front

What is the trend of ionization energy across a period in the periodic table?

Back

Ionization energy generally increases across a period from left to right due to increasing nuclear charge.

Front

What is the trend of ionization energy down a group in the periodic table?

Back

Ionization energy generally decreases down a group due to increased distance from the nucleus and increased electron shielding.