Chap. 3 & 4 Flashcard

Front

What is the shape of a p-orbital?

Back

The p-orbital has a dumbbell shape.

Front

What does Hund's rule state?

Back

Hund's rule states that electrons will occupy degenerate orbitals singly before pairing up.

Front

What is the Pauli exclusion principle?

Back

The Pauli exclusion principle states that no two electrons in an atom can have the same set of four quantum numbers.

Front

What does the spin quantum number describe?

Back

The spin quantum number describes the direction of the electron spin, which can be either +1/2 or -1/2.

Front

How many atoms of carbon are in 6.00g of carbon?

Back

There are 3.01x10^23 atoms of carbon in 6.00g of carbon.

Front

What is the formula to calculate the number of moles from mass?

Back

Number of moles = mass (g) / molar mass (g/mol).

Front

What is the significance of the principal quantum number (n)?

Back

The principal quantum number (n) indicates the energy level and size of the orbital.

Front

What is the shape of an s-orbital?

Back

The s-orbital has a spherical shape.

Front

What is the maximum number of electrons in a d-orbital?

Back

The maximum number of electrons in a d-orbital is 10.

Front

What is the difference between an orbital and an orbital diagram?

Back

An orbital is a region in an atom where there is a high probability of finding an electron, while an orbital diagram visually represents the distribution of electrons in these orbitals.