Periodic Table Basics

Front

What do elements in the same group or column of the periodic table have in common?

Back

They have the same number of valence electrons.

Front

What is the name of the element with the symbol 'Na'?

Back

Sodium.

Front

What are the vertical columns on the periodic table called?

Back

Groups.

Front

What are the horizontal rows on the periodic table called?

Back

Periods.

Front

What is the term for the columns in the periodic table?

Back

Groups.

Front

What is a valence electron?

Back

A valence electron is an electron that is found in the outermost shell of an atom and can participate in forming chemical bonds.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the mass number of an element?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What is the significance of the periodic table's arrangement?

Back

The arrangement of the periodic table reflects the periodic trends in the properties of elements, such as electronegativity, ionization energy, and atomic radius.

Front

What are periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table, indicating the number of electron shells an atom has.