Atomic Structure and Isotopes

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

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

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 the nucleus of an atom.

Front

What charge do protons have?

Back

Protons have a positive charge.

Front

What is the charge of a neutron?

Back

Neutrons have no charge (neutral).

Front

What is the charge of an electron?

Back

Electrons have a negative charge.

Front

How many protons does a titanium atom have?

Back

A titanium atom has 22 protons.

Front

What is the difference between carbon-12 and carbon-14?

Back

Carbon-12 has 6 neutrons, while carbon-14 has 8 neutrons; they differ by 2 neutrons, not protons.

Front

What is the significance of the atomic number in the periodic table?

Back

The atomic number determines the position of an element in the periodic table and its chemical properties.