Periodic trend introduction

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 element has the largest atomic radius in the periodic table?

Back

Cesium (Cs) has the largest atomic radius in the periodic table.

Front

What is electronegativity?

Back

Electronegativity is a measure of how well an atom can attract and hold onto electrons.

Front

Which element has the highest electronegativity?

Back

Fluorine (F) has the highest electronegativity of all elements.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

Which element has a lower ionization energy than Scandium (Sc)?

Back

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

Front

How does atomic radius change across a period?

Back

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

Front

How does atomic radius change down a group?

Back

Atomic radius increases down a group because additional electron shells are added, increasing the distance between the nucleus and the outermost electrons.

Front

What is the trend of electronegativity in the periodic table?

Back

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

Front

What is the trend of ionization energy in the periodic table?

Back

Ionization energy increases across a period from left to right and decreases down a group.