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 is ionization energy?

Back

The energy required to remove an electron from an atom or ion in its gaseous state.

Front

Which group of elements is known as alkali metals?

Back

Group 1 elements, which include Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).

Front

What is electronegativity?

Back

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

Front

How does atomic radius change across a period?

Back

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

Front

What is the trend of ionization energy down a group?

Back

Ionization energy generally decreases down a group as atomic size increases, making it easier to remove an electron.

Front

What are transition metals?

Back

Elements found in groups 3-12 of the periodic table, characterized by the presence of d electrons.

Front

What is the significance of the group number in the periodic table?

Back

The group number indicates the number of valence electrons in the elements of that group.

Front

What is the trend of electronegativity down a group?

Back

Electronegativity generally decreases down a group due to increased distance between the nucleus and bonding electrons.

Front

What is a noble gas?

Back

Elements in group 18 of the periodic table, known for their lack of reactivity due to having a full valence shell.