Periodic Trends

Front

What happens to atomic size as you move across a period in the periodic table?

Back

Atoms get smaller.

Front

Which element is more electronegative: K, Rb, Cl, or B?

Back

Cl is more electronegative.

Front

Define electronegativity.

Back

Electronegativity is the ability of an atom to accept/attract electrons.

Front

Why do atoms get smaller as you move across the periodic table?

Back

Atoms have more protons, which increases the positive charge and pulls electrons closer.

Front

Identify an element with similar chemical properties to oxygen and selenium, with an atomic number greater than krypton but less than iodine.

Back

Tellurium.

Front

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

Back

Electronegativity increases.

Front

What is the trend in atomic radius as you move down a group in the periodic table?

Back

Atomic radius increases.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in a gaseous state.

Front

How does ionization energy change across a period?

Back

Ionization energy increases as you move across a period.

Front

What is the relationship between atomic number and the number of protons in an atom?

Back

The atomic number is equal to the number of protons in an atom.