Periodic Trends

Front

What is electronegativity?

Back

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

Front

What is atomic radius?

Back

Atomic radius is one-half the distance between the nuclei of identical atoms that are bonded together.

Front

Which group of elements has the lowest ionization energies?

Back

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

Front

What is ionization energy?

Back

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

Front

What is the trend of electronegativity across a period?

Back

Electronegativity generally increases across a period from left to right.

Front

What is the trend of atomic radius down a group?

Back

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

Front

What is the trend of ionization energy down a group?

Back

Ionization energy generally decreases down a group due to increased distance from the nucleus.

Front

What is the trend of electronegativity down a group?

Back

Electronegativity generally decreases down a group due to increased atomic size.

Front

What are noble gases known for in terms of reactivity?

Back

Noble gases are known for their low reactivity due to having a full valence shell.

Front

What is the relationship between atomic size and ionization energy?

Back

As atomic size increases, ionization energy generally decreases.