Atoms/Ions/Isotopes

Front

IN AN ION THE NUMBER OF PROTONS __________ THE NUMBER OF ELECTRONS.

Back

≠ (not equal) - In an ion, the number of protons does not equal the number of electrons, resulting in a net charge.

Front

What is the correct symbol for Fluorine-18?

Back

F-18 - Fluorine-18 is represented as F with a mass number of 18.

Front

How many protons are in the isotope with atomic number 29?

Back

29 protons - The atomic number indicates the number of protons in an atom.

Front

Potassium-39 has how many neutrons?

Back

20 neutrons - Potassium-39 has 39 (mass number) - 19 (atomic number) = 20 neutrons.

Front

Different isotopes of an element contain different numbers of ___.

Back

neutrons - Isotopes vary in the number of neutrons while having the same number of protons.

Front

Define an ion.

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

What is the atomic number of an element?

Back

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

Front

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

Back

Number of neutrons = Mass number - Atomic number.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.