Periodic Trends

Front

As you move across the periodic table, atoms tend to get smaller because ____________.

Back

the atoms have more protons and electrons.

Front

Identify the trend: Atomic radius ____________ across a period and ____________ down a group.

Back

decreases; increases

Front

Which element has a higher electronegativity than arsenic (As)?

Back

Nitrogen (N)

Front

Atomic radius generally increases as we move ____________.

Back

down a group

Front

As you move down the periodic table, atoms get bigger because ____________.

Back

the atoms have more energy levels.

Front

Define electronegativity.

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.

Front

What is ionization energy?

Back

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

Front

How does ionization energy change across a period?

Back

Ionization energy increases across a period.

Front

What is the trend for ionic radius down a group?

Back

Ionic radius increases down a group.

Front

Explain why atomic radius decreases across a period.

Back

As protons are added to the nucleus, the increased positive charge pulls electrons closer, reducing atomic size.