Periodic Table Trends

Front

What is the Periodic Table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

Front

What are groups in the Periodic Table?

Back

Vertical columns in the Periodic Table that group elements with similar chemical properties and the same number of valence electrons.

Front

What are periods in the Periodic Table?

Back

Horizontal rows in the Periodic Table that indicate the number of electron shells an element has.

Front

What is a valence electron?

Back

Electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

Which group contains noble gases?

Back

Group 18, which includes elements like Helium (He), Neon (Ne), and Argon (Ar), known for their lack of reactivity.

Front

What is the trend in reactivity for alkali metals?

Back

Reactivity increases as you move down Group 1 in the Periodic Table.

Front

What is the trend in atomic size across a period?

Back

Atomic size decreases from left to right across a period due to increasing nuclear charge.

Front

What is electronegativity?

Back

A measure of the tendency of an atom to attract a bonding pair of electrons.

Front

Which element is a metalloid?

Back

Silicon (Si) is an example of a metalloid, exhibiting properties of both metals and nonmetals.

Front

What is the significance of the zig-zag line on the Periodic Table?

Back

It separates metals from nonmetals and indicates the position of metalloids.