Periodic Trends

Front

What is electronegativity?

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Which halogen has the greatest electronegativity?

Back

Chlorine (Cl) has the greatest electronegativity among the halogens.

Front

What is atomic radius?

Back

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

Which halogen has the smallest atomic radius?

Back

Fluorine (F) has the smallest atomic radius among the halogens.

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 the smallest ionization energy in Period 6?

Back

Cesium (Cs) has the smallest ionization energy in Period 6.

Front

Why does Francium (Fr) have the lowest ionization energy in Group 1?

Back

Francium has the lowest ionization energy because its 1 valence electron is very far from the nucleus, requiring little energy to remove it.

Front

What group of elements has the lowest ionization energies?

Back

Alkali Metals (Group 1) have the lowest ionization energies.

Front

How does atomic size change across a period?

Back

Atomic size decreases from left to right across a period due to increasing nuclear charge.

Front

How does atomic size change down a group?

Back

Atomic size increases down a group due to the addition of electron shells.