Periodic Trends

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom.

Front

Why does chlorine (Cl) have the highest electronegativity in Period 2?

Back

Cl is the smallest and has the greatest effective nuclear charge.

Front

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

Back

Carbon (C) has a higher electronegativity than arsenic.

Front

Which periodic group has the smallest atomic radius?

Back

Noble Gases have the smallest atomic radius.

Front

Which atom has the largest atomic radius in Group 18?

Back

Radon (Rn) has the largest atomic radius in Group 18.

Front

Define electronegativity.

Back

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

Front

What trend is observed in ionization energy across a period?

Back

Ionization energy generally increases across a period from left to right.

Front

What trend is observed in atomic radius down a group?

Back

Atomic radius generally increases down a group.

Front

What is the relationship between atomic radius and ionization energy?

Back

As atomic radius increases, ionization energy generally decreases.

Front

What is effective nuclear charge?

Back

Effective nuclear charge is the net positive charge experienced by an electron in a multi-electron atom.