PERIODICITY Review Honors

Front

What is the atomic radius?

Back

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

Front

Which element has the smallest atomic radius: Sulfur, Chlorine, Aluminum, Sodium?

Back

Chlorine has the smallest atomic radius among these elements.

Front

What are metals?

Back

Metals are elements that are shiny, conduct electricity and heat, and are malleable and ductile.

Front

What is electronegativity?

Back

Electronegativity is a measure of how good an atom is at attracting electrons.

Front

What is the trend of atomic radius in a group of the periodic table?

Back

Atomic radius increases down a group due to the addition of energy levels.

Front

What is the trend of atomic radius across a period in the periodic table?

Back

Atomic radius decreases across a period from left to right due to increased nuclear charge.

Front

What are alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for being highly reactive.

Front

Why doesn't having more protons increase the attraction down a column?

Back

As energy levels are added, non-valence electrons block the extra protons from attracting valence electrons.

Front

What is the significance of valence electrons?

Back

Valence electrons determine an atom's chemical properties and its ability to bond with other atoms.

Front

What is the difference between metals and nonmetals?

Back

Metals are good conductors of heat and electricity, while nonmetals are poor conductors and often have higher electronegativities.