Periodic Trends

Front

What is 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 atom has the largest atomic radius: potassium, rubidium, francium, or cesium?

Back

Francium has the largest atomic radius among these options.

Front

What is electronegativity?

Back

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

Front

Which has the greater electronegativity: Cl or Al?

Back

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

Front

What is ionization energy?

Back

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

Front

Which element has a lower ionization energy than Scandium (Sc): He, Ti, Ca, or Mg?

Back

Calcium (Ca) has a lower ionization energy than Scandium (Sc).

Front

How does electronegativity change across a period?

Back

Electronegativity increases from left to right across a period.

Front

How does electronegativity change down a group?

Back

Electronegativity decreases from top to bottom within a group.

Front

What is the trend of atomic radius in a group?

Back

The atomic radius increases as you move down a group due to the addition of electron shells.

Front

What is the trend of ionization energy across a period?

Back

Ionization energy generally increases from left to right across a period.