Nuclear Symbol

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

How is an isotope represented in hyphen notation?

Back

An isotope is represented in hyphen notation by the element name followed by a hyphen and the mass number (e.g., Carbon-12).

Front

What does the atomic number indicate about an element?

Back

The atomic number indicates the number of protons in the nucleus, which defines the element.

Front

How many protons are in an atom with an atomic number of 3?

Back

There are 3 protons in an atom with an atomic number of 3.

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 do you determine the number of neutrons in an isotope?

Back

The number of neutrons can be determined by subtracting the atomic number from the mass number.

Front

What is the mass number of an isotope?

Back

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

Front

How many protons does titanium have?

Back

Titanium has 22 protons.

Front

If an isotope of lithium has a mass number of 8, how many neutrons does it have?

Back

It has 5 neutrons (8 - 3 protons = 5 neutrons).

Front

What is the significance of the atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).