Ions and Isotope Review

Front

What must be true for an atom to be neutral?

Back

The atom has the same number of protons and electrons.

Front

What charge does aluminum have after losing 3 electrons?

Back

+3

Front

How many valence electrons are in an atom of Tin (Sn)?

Back

4

Front

What is the correct symbol for Fluorine-18?

Back

F-18

Front

Different isotopes of an element contain different numbers of what?

Back

Neutrons.

Front

What are ions?

Back

Atoms or molecules that have gained or lost one or more electrons, resulting in a net charge.

Front

What is the charge of a cation?

Back

Positive.

Front

What is the charge of an anion?

Back

Negative.

Front

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

Back

Subtract the atomic number from the mass number.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.