Periodic Table & Trends

Front

What are noble gases?

Back

Noble gases are a group of inert gases in Group 18 of the periodic table, known for their lack of reactivity due to having a full valence shell.

Front

What happens to electronegativity as you move down Group 16?

Back

Electronegativity decreases as you move down Group 16 due to the increasing atomic radius and shielding effect.

Front

Why does atomic radius increase down a group in the periodic table?

Back

Atomic radius increases down a group because more shells (energy levels) are added, which increases the distance between the nucleus and the outermost electrons.

Front

Which element has a greater electronegativity: Nitrogen (N) or Carbon (C)?

Back

Nitrogen (N) has a greater electronegativity than Carbon (C).

Front

How is the Modern Periodic Table arranged?

Back

The Modern Periodic Table is arranged by atomic number, which is the number of protons in an atom's nucleus.

Front

What are alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for being highly reactive and having one electron in their outermost shell.

Front

What are alkaline earth metals?

Back

Alkaline earth metals are the elements in Group 2 of the periodic table, characterized by having two electrons in their outermost shell and being less reactive than alkali metals.

Front

What are halogens?

Back

Halogens are the elements in Group 17 of the periodic table, known for being highly reactive nonmetals with seven electrons in their outermost shell.

Front

What is the trend in atomic size across a period?

Back

As you move from left to right across a period, atomic size decreases due to increasing nuclear charge, which pulls electrons closer to the nucleus.

Front

What is ionization energy?

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.