Atomic Structure & Isotopes

Front

What is atomic structure?

Back

Atomic structure refers to the arrangement of protons, neutrons, and electrons in an atom, which determines its properties and behavior.

Front

What are isotopes?

Back

Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons, resulting in different atomic masses.

Front

What is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

How do you calculate the atomic mass of lithium?

Back

Use the formula: (fraction of isotope 1)(mass of isotope 1) + (fraction of isotope 2)(mass of isotope 2).

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).

Front

Where is the nucleus located in an atom?

Back

The nucleus is located at the center of the atom.

Front

What particles are found in the nucleus of an atom?

Back

The nucleus contains protons and neutrons.

Front

What is the approximate mass of a proton?

Back

The mass of a proton is approximately 1 amu.