Periodic Trends and Classification

Front

What is the element with the lowest electronegativity in Period 3?

Back

Na

Front

What term describes a measure of the size of an atom?

Back

Atomic radius

Front

What is ionization energy?

Back

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

Front

What do atoms of elements in group 1 have in their outermost energy level?

Back

One electron.

Front

Why do atoms get bigger as you move down the periodic table?

Back

Atoms have more energy levels.

Front

What is electronegativity?

Back

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

Front

How does atomic radius change across a period?

Back

Atomic radius decreases from left to right across a period.

Front

What is the trend of ionization energy as you move down a group?

Back

Ionization energy generally decreases as you move down a group.

Front

What is the relationship between atomic size and ionization energy?

Back

As atomic size increases, ionization energy decreases.

Front

What is the general trend of electronegativity as you move across a period?

Back

Electronegativity increases from left to right across a period.