Atomic Structure and Bohr Models

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 does the mass number represent?

Back

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

Front

What is the maximum number of electrons in the first shell (energy level)?

Back

The maximum number of electrons in the first shell is 2.

Front

What is the maximum number of electrons in the second shell (energy level)?

Back

The maximum number of electrons in the second shell is 8.

Front

What is the maximum number of electrons in the third shell (energy level)?

Back

The maximum number of electrons in the third shell is 8.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is an isotope?

Back

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

Front

What is the significance of the periodic table?

Back

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

Front

What is the Bohr model of the atom?

Back

The Bohr model describes the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average mass of an element's isotopes, while mass number is the total number of protons and neutrons in a specific isotope.