Atomic Structure Review

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 determine the number of electrons in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to the number of protons, which is the atomic number.

Front

What is the mass number of an atom?

Back

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

Front

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

Back

To find the number of neutrons, subtract the atomic number from the mass number (Neutrons = Mass Number - Atomic Number).

Front

What is the significance of the APEMAN acronym in atomic structure?

Back

APEMAN stands for Atomic number = Protons = Electrons, Mass number = Protons + Neutrons.

Front

How many protons does an atom of carbon have?

Back

An atom of carbon has 6 protons, as its atomic number is 6.

Front

What is the relationship between protons and neutrons in an atom?

Back

Protons and neutrons together make up the mass number, but their individual counts can vary depending on the isotope.

Front

How many neutrons are in an atom of oxygen with a mass number of 16?

Back

An atom of oxygen has 8 neutrons (16 mass number - 8 atomic number = 8 neutrons).

Front

What is the atomic number of manganese (Mn)?

Back

The atomic number of manganese (Mn) is 25.

Front

How do you find the number of neutrons in manganese with a mass number of 55?

Back

To find the number of neutrons in manganese, subtract the atomic number from the mass number (55 - 25 = 30 neutrons).