Atomic structure

Front

Subatomic particles with a positive charge

Back

Protons are subatomic particles found in the nucleus of an atom, carrying a positive electrical charge.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the atomic mass?

Back

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

Front

What are neutrons?

Back

Neutrons are subatomic particles found in the nucleus of an atom, carrying no electrical charge.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged subatomic particles that orbit the nucleus and are involved in chemical bonding.

Front

How do you calculate the number of neutrons in an atom?

Back

Number of neutrons = Atomic mass - Atomic number.

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 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.

Front

What is the electron configuration of an atom?

Back

Electron configuration describes the distribution of electrons in an atom's orbitals.

Front

What is the mass number?

Back

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