Periodic Trends Flashcard

Front

Define electron affinity.

Back

The energy it takes to add an electron to an atom.

Front

Which atom has the largest atomic radius in Group 18?

Back

Rn (Radon)

Front

What happens to the atomic radius as you move across the periodic table from left to right?

Back

The atomic radius decreases because the number of protons increases, so attraction to electrons increases.

Front

Atoms that have a high electronegativity, _______________.

Back

hold on to their electrons more tightly.

Front

What term is used to describe 'A measure of the size of an atom'?

Back

Atomic radius.

Front

What is the trend in ionization energy as you move down a group in the periodic table?

Back

Ionization energy decreases.

Front

What is the trend in electronegativity as you move across a period from left to right?

Back

Electronegativity increases.

Front

Define atomic radius.

Back

A measure of the size of an atom, typically the distance from the nucleus to the outermost electron shell.

Front

What is the relationship between atomic size and metallic character?

Back

As atomic size increases, metallic character increases.

Front

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

Back

Electron affinity generally increases.