AP Final Exam Fall Semester

Front

What is the de Broglie wavelength formula for an electron?

Back

The de Broglie wavelength (λ) is given by the formula λ = h / (mv), where h is Planck's constant, m is the mass of the electron, and v is its velocity.

Front

Calculate the wavelength of an electron traveling at 7.0 x 10^3 km/s with a mass of 9.1 x 10^-28 g.

Back

Using the de Broglie wavelength formula, λ = h / (mv), the wavelength is calculated to be 1.0 x 10^-10 m.

Front

Which solid has the highest melting point: NaF, NaCl, NaBr, or NaI?

Back

NaF has the highest melting point due to stronger ionic bonds compared to the others.

Front

What is electron-dot notation?

Back

Electron-dot notation represents the valence electrons of an atom as dots around the element's symbol.

Front

What is the electron-dot notation for indium?

Back

The correct electron-dot notation for indium is represented as C.

Front

What is the noble gas configuration for a bromide ion?

Back

The noble gas configuration for a bromide ion is [Ar]4s^2 3d^10 4p^6.

Front

Define effective nuclear charge (Z_eff).

Back

Effective nuclear charge (Z_eff) is the net positive charge experienced by an electron in a multi-electron atom, accounting for shielding by other electrons.

Front

What is the effective nuclear charge for sulfur?

Back

The effective nuclear charge for sulfur is 6.

Front

Explain the concept of ionic bonding.

Back

Ionic bonding is the electrostatic attraction between oppositely charged ions, typically formed when electrons are transferred from one atom to another.

Front

What factors affect the melting point of ionic compounds?

Back

The melting point of ionic compounds is affected by ionic charge, ionic size, and the lattice energy.