Periodic Trends

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)?

Back

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

Front

What group of elements includes the most active elements?

Back

The halogens are the most active group of elements.

Front

What does electronegativity measure?

Back

Electronegativity measures how good an atom is at attracting electrons.

Front

What are the characteristics of Calcium?

Back

Calcium is a metal, has low electronegativity, and has 2 valence electrons.

Front

What trend is observed in ionization energy across a period?

Back

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

Front

What trend is observed in ionization energy down a group?

Back

Ionization energy generally decreases down a group.

Front

What is the relationship between atomic radius and ionization energy?

Back

As atomic radius increases, ionization energy decreases.

Front

What is the definition of atomic radius?

Back

Atomic radius is the distance from the nucleus to the outermost electron.

Front

How does electronegativity change across a period?

Back

Electronegativity generally increases across a period from left to right.