Atoms/Ions/Isotopes

Front

IN A POSITIVE ION, THE # OF ELECTRONS _____ # PROTONS

Back

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Front

Which atom of these isotopes has 3 protons? The symbol for lithium is Li.

Back

All of them.

Front

What is the difference between Neon-20 and Neon-22?

Back

They have different numbers of neutrons.

Front

How many electrons does this magnesium ion have?

Back

10

Front

IN AN ION THE NUMBER OF PROTONS_________ THE NUMBER OF ELECTRONS.

Back

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Front

What is an atom?

Back

The basic unit of a chemical element, consisting of protons, neutrons, and electrons.

Front

Define an ion.

Back

An atom or molecule that has a net electric charge due to the loss or gain of one or more electrons.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

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

Back

Subtract the atomic number (protons) from the mass number.

Front

What is the charge of a negative ion?

Back

Negative.