Atomic Structure

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 are protons?

Back

Protons are subatomic particles found in the nucleus of an atom that have a positive charge.

Front

What are electrons?

Back

Electrons are subatomic particles that have a negative charge and are found in the electron cloud surrounding the nucleus.

Front

What are neutrons?

Back

Neutrons are subatomic particles found in the nucleus of an atom that have no charge (neutral).

Front

How do you determine the number of electrons in a neutral atom?

Back

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

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

Isotopes are variants of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the electron configuration of sulfur?

Back

The electron configuration of sulfur (atomic number 16) is 1s² 2s² 2p⁶ 3s² 3p⁴.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configurations, and recurring chemical properties.

Front

What is the relationship between protons and electrons in an atom?

Back

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