Atoms Ions and Isotopes

Front

What are isotopes?

Back

Isotopes are atoms of the same 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 isotope?

Back

The atomic mass of an isotope is the total number of protons and neutrons in its nucleus.

Front

How do you calculate the number of neutrons in an isotope?

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the mass number (total protons and neutrons).

Front

What is the charge of an atom that has lost an electron?

Back

The charge of an atom that has lost an electron is +1.

Front

What is a cation?

Back

A cation is a positively charged ion that forms when an atom loses one or more electrons.

Front

What is an anion?

Back

An anion is a negatively charged ion that forms when an atom gains one or more electrons.

Front

What determines the charge of an ion?

Back

The charge of an ion is determined by the difference between the number of protons and electrons in the atom.

Front

What is the significance of valence electrons?

Back

Valence electrons are the outermost electrons of an atom and are important for determining how an atom will bond with others.

Front

How many valence electrons does carbon have?

Back

Carbon has 4 valence electrons.

Front

What is the charge of an ion formed from an element with 3 valence electrons?

Back

An element with 3 valence electrons will likely form a +3 charge when it becomes an ion.