Review: Atomic Structure & Periodic Table

Front

What is the atomic number?

Back

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

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals. They are found along the zig-zag line on the periodic table.

Front

What is the significance of the atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu). It reflects the number of protons and neutrons in the nucleus.

Front

What group do alkaline earth metals belong to?

Back

Alkaline earth metals belong to group 2 of the periodic table.

Front

What are halogens?

Back

Halogens are the elements found in group 17 of the periodic table, known for being highly reactive nonmetals.

Front

Where are noble gases located on the periodic table?

Back

Noble gases are located in group 18 of the periodic table and are known for their lack of reactivity.

Front

What is a Lewis Dot Structure?

Back

A Lewis Dot Structure is a diagram that represents the valence electrons of an atom, showing how they are arranged around the nucleus.

Front

What is the role of protons in an atom?

Back

Protons determine the atomic number and identity of an element, and they contribute to the positive charge of the nucleus.

Front

What is the difference between atomic mass and atomic weight?

Back

Atomic mass is the mass of a single atom, while atomic weight is the average mass of an element's isotopes, taking into account their relative abundance.

Front

What are transition metals?

Back

Transition metals are elements found in groups 3 to 12 of the periodic table, known for their ability to form various oxidation states.