Chapter 6 Round 2

Front

What is the principal quantum number (n) and what does it represent?

Back

The principal quantum number (n) indicates the energy level of an electron in an atom and can take positive integer values (1, 2, 3, ...).

Front

How does the removal of electrons from an ion affect its radius?

Back

When electrons are removed from an ion (making it positive), the radius of the ion decreases due to increased effective nuclear charge acting on the remaining electrons.

Front

What is ionization energy (IE) and what does it measure?

Back

Ionization energy (IE) is the minimum energy required to remove an electron from an atom in its gaseous state.

Front

How does the addition of electrons to an ion affect its radius?

Back

When electrons are added to an ion (making it more negative), the radius of the ion increases due to electron-electron repulsion and decreased effective nuclear charge.

Front

What are the possible magnetic quantum numbers (mL) for an angular momentum quantum number (L) of 2?

Back

The possible magnetic quantum numbers (mL) when L = 2 are -2, -1, 0, 1, and 2.

Front

What is the relationship between the principal quantum number (n) and the energy of an electron?

Back

The energy of an electron increases with increasing principal quantum number (n); higher n values correspond to higher energy levels.

Front

What is the significance of the angular momentum quantum number (L)?

Back

The angular momentum quantum number (L) determines the shape of the electron's orbital and can take values from 0 to n-1.

Front

What is the effect of effective nuclear charge on atomic size?

Back

As effective nuclear charge increases, atomic size decreases because the increased attraction pulls electrons closer to the nucleus.

Front

What is the trend of ionization energy across a period in the periodic table?

Back

Ionization energy generally increases across a period from left to right due to increasing nuclear charge and decreasing atomic radius.

Front

What is the trend of atomic radius down a group in the periodic table?

Back

Atomic radius generally increases down a group due to the addition of electron shells, which outweighs the increase in nuclear charge.