Bohr model

Front

What is the Bohr model?

Back

The Bohr model is a theory of atomic structure that depicts electrons orbiting the nucleus in fixed paths or energy levels.

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 an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means, defined by its number of protons.

Front

How do you determine the number of protons in an atom?

Back

The number of protons in an atom is equal to its atomic number.

Front

What are valence electrons?

Back

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

Front

What is the significance of valence electrons in chemical reactions?

Back

Valence electrons determine how an atom will bond with other atoms, influencing the chemical properties of the element.

Front

What is an atomic orbital?

Back

An atomic orbital is a region in an atom where there is a high probability of finding electrons.

Front

What is the difference between the ground state and excited state of an atom?

Back

The ground state is the lowest energy state of an atom, while the excited state occurs when an electron absorbs energy and moves to a higher energy level.

Front

What is the principle quantum number?

Back

The principal quantum number (n) indicates the main energy level occupied by an electron in an atom.

Front

What is the maximum number of electrons in a shell?

Back

The maximum number of electrons in a shell is given by the formula 2n², where n is the principal quantum number.