Periodicity - Chemistry

Front

What is the periodic table?

Back

A chart that organizes all known elements by their atomic number, electron configuration, and recurring chemical properties.

Front

What is an atom?

Back

The basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is a valence electron?

Back

An electron in the outermost shell of an atom that can participate in chemical bonding.

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom.

Front

What is electronegativity?

Back

The tendency of an atom to attract electrons towards itself in a bond.

Front

What is atomic radius?

Back

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

Front

What happens to ionization energy as you move down a group in the periodic table?

Back

It decreases because the valence electrons are further from the nucleus.

Front

What is the trend of atomic radius across a period?

Back

It decreases from left to right due to increasing nuclear charge.