Chemistry Periodic Table Trends

Front

Which element has the largest atomic radius?

Back

Francium (Fr) has the largest atomic radius due to its position in Group 1, where atomic radius increases down the group.

Front

What is the periodic trend for electronegativity down a group?

Back

Electronegativity decreases down a group because the increased distance from the nucleus reduces the attraction between the nucleus and the valence electrons.

Front

Valence electrons are ____________________

Back

Electrons found on the outer shell of an atom, which are involved in chemical bonding.

Front

Which of the following elements has the smallest radius: Mg, Al, Si, K?

Back

Silicon (Si) has the smallest atomic radius among these elements due to its position in the periodic table.

Front

The electronegativity of an atom ________ across a row, and _________ down a column.

Back

Increases across a row, and decreases down a column.

Front

What is atomic radius?

Back

Atomic radius is the distance from the nucleus of an atom to the outermost shell of electrons.

Front

How does atomic radius change across a period?

Back

Atomic radius decreases across a period from left to right due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

What is electronegativity?

Back

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

Front

Which group of elements has the highest electronegativity?

Back

Group 17 (Halogens) has the highest electronegativity values.

Front

What is the trend of ionization energy down a group?

Back

Ionization energy decreases down a group because the outer electrons are further from the nucleus and are held less tightly.