Atoms and the Periodic Table Review

Front

What are the electrons in the outermost energy level called?

Back

Valence electrons are the electrons in the outermost energy level of an atom, which are important for chemical bonding.

Front

Which element on the periodic table is not part of any family (group)?

Back

Hydrogen is the only element that is not part of any family or group on the periodic table.

Front

What is an anion?

Back

An anion is an atom that has gained one or more electrons, resulting in a negative charge.

Front

How does gaining an electron affect the size of an anion?

Back

An anion is typically larger than its neutral atom because the addition of an electron increases electron-electron repulsion.

Front

Who was the scientist that first arranged the periodic table?

Back

Dmitri Mendeleev is credited with the first arrangement of the periodic table based on atomic mass.

Front

Where are the most reactive metals found in the periodic table?

Back

The most reactive metals are found in Group 1 of the periodic table, known as the alkali metals.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number and grouped by similar properties.

Front

What are groups in the periodic table?

Back

Groups are vertical columns in the periodic table that contain elements with similar chemical properties.

Front

What are periods in the periodic table?

Back

Periods are horizontal rows in the periodic table that indicate the number of electron shells in the elements.

Front

What is the significance of valence electrons?

Back

Valence electrons determine how an atom can bond with other atoms and are crucial for understanding chemical reactions.