Atomic Structure and Isotopes

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

What is an isotope?

Back

An isotope is an atom that has the same number of protons but a different number of neutrons compared to other atoms of the same element.

Front

In a correctly written atomic symbol, what does the 'A' represent?

Back

The 'A' represents the mass number of the atom.

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 isotopes of the same element differ?

Back

Isotopes of the same element differ in the number of neutrons they contain.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

How many neutrons are in carbon-12?

Back

Carbon-12 has 6 neutrons.

Front

How many neutrons are in carbon-14?

Back

Carbon-14 has 8 neutrons.

Front

What is the neutron count in uranium-235?

Back

Uranium-235 has 143 neutrons.

Front

What is the neutron count in fluorine-14?

Back

Fluorine-14 has 5 neutrons.