Understand Atomic and Mass Numbers

Front

What is the atomic number?

Back

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

Front

What is the atomic number of Barium (Ba)?

Back

The atomic number of Barium (Ba) is 56.

Front

What is the mass number defined as?

Back

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

Front

What is the atomic number of an atom with 3 protons?

Back

The atomic number is 3.

Front

If an atom has 10 electrons, how many protons does it have?

Back

It has 10 protons.

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 calculate the mass number of an atom?

Back

Mass number = Number of protons + Number of neutrons.

Front

What does a higher atomic number indicate about an element?

Back

A higher atomic number indicates that the element has more protons and is further down the periodic table.

Front

What is the atomic number of Hydrogen (H)?

Back

The atomic number of Hydrogen (H) is 1.

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.