Atomic Number and Mass Number

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 is the atomic number related to electrons in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to 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

Number of neutrons = Mass number - Atomic number.

Front

What is the atomic number of Magnesium?

Back

The atomic number of Magnesium is 12.

Front

What is the atomic number of Oxygen?

Back

The atomic number of Oxygen is 8.

Front

What does the atomic number indicate about an element?

Back

The atomic number indicates the element's position in the periodic table and its chemical properties.

Front

How many protons does an atom with an atomic number of 50 have?

Back

An atom with an atomic number of 50 has 50 protons.

Front

What is the significance of the atomic number in chemical reactions?

Back

The atomic number determines how an element will react chemically with other elements.

Front

What is the atomic number of Fluorine?

Back

The atomic number of Fluorine is 9.