Atomic Radius & Bonding

Front

What makes an atom stable?

Back

An atom is stable when its valence shell is filled with electrons.

Front

Which element has 4 energy levels and 1 valence electron in its fourth energy level?

Back

Potassium.

Front

How do alkali metals behave in terms of reactivity?

Back

Alkali metals are highly reactive since they lose 1 electron easily to form ions.

Front

What is not considered a periodic trend?

Back

The number of elements in a group.

Front

Why do atoms get larger as you move down the periodic table?

Back

Atoms get larger because they have more energy levels.

Front

Define atomic radius.

Back

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

Front

What is the trend of atomic radius across a period?

Back

The atomic radius decreases across a period from left to right.

Front

What is the trend of atomic radius down a group?

Back

The atomic radius increases down a group.

Front

What is a valence electron?

Back

A valence electron is an electron in the outermost shell of an atom that can participate in chemical bonding.

Front

What is the significance of the valence shell?

Back

The valence shell determines an atom's chemical properties and reactivity.