ASSESSMENT Trends in the Periodic Table

Front

What is the atomic radius?

Back

The atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons. It generally increases down a group and decreases across a period.

Front

Which element has the largest atomic radius in Group 18?

Back

Argon (Ar) has the largest atomic radius in Group 18.

Front

What property is measured by the density of an element?

Back

Density is the mass per unit volume of a substance, indicating how compact the matter is within the element.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state. It generally increases across a period and decreases down a group.

Front

Which element has a greater electronegativity: Chlorine (Cl) or Aluminum (Al)?

Back

Chlorine (Cl) has a greater electronegativity than Aluminum (Al).

Front

What is the trend of atomic radius in the periodic table?

Back

Atomic radius increases down a group and decreases across a period from left to right.

Front

Which group 4A element has the highest ionization energy?

Back

Tin (Sn) has the highest ionization energy among group 4A elements.

Front

What is the significance of the periodic table in chemistry?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties, allowing predictions about element behavior.

Front

How does atomic radius change across a period?

Back

Atomic radius decreases across a period due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

What is the relationship between ionization energy and atomic radius?

Back

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