SDSMT - Exam 2 Review

Front

What is the formula of the compound formed between magnesium (Mg) and sulfur (S)?

Back

MgS

Front

Which metal has the lowest ionization energy according to periodic trends?

Back

Cesium (Cs)

Front

Arrange the following ions in order of increasing ionic size: K⁺, Mg²⁺, Al³⁺.

Back

Al³⁺ < Mg²⁺ < K⁺

Front

How do you calculate the energy of a photon given its wavelength?

Back

Energy (E) = hc/λ, where h is Planck's constant and c is the speed of light.

Front

What is the ground-state electron configuration of calcium (Ca)?

Back

1s² 2s² 2p⁶ 3s² 3p⁶ 4s²

Front

What is the significance of the emission spectrum in identifying elements?

Back

The emission spectrum is unique for each element and can be used to identify the element based on its spectral lines.

Front

Define ionization energy.

Back

Ionization energy is the energy required to remove an electron from an atom or ion in its gaseous state.

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.

Front

What is the trend of ionic size down a group in the periodic table?

Back

Ionic size generally increases down a group due to the addition of electron shells.

Front

Explain the concept of electronegativity.

Back

Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons.