Chemistry MP2CP1 Review

Front

What is the chemical formula for tetraphosphorus decasulfide?

Back

P₄S₁₀

Front

What is the correct Lewis electron-dot structure for magnesium fluoride (MgF₂)?

Back

The Lewis structure shows magnesium with no dots (as it has no valence electrons) and two fluorine atoms, each with 7 dots around them, indicating their valence electrons.

Front

What is the electron-dot symbol for an atom with an electron configuration of 1s² 2s²?

Back

The electron-dot symbol is represented by the element's symbol with 4 dots around it, indicating the 4 valence electrons.

Front

Is H₂S a polar or nonpolar molecule?

Back

H₂S is a polar molecule due to the bent shape and difference in electronegativity between hydrogen and sulfur.

Front

What is the name of the compound LiBr?

Back

Lithium bromide.

Front

Define a polar molecule.

Back

A polar molecule has a net dipole moment due to the presence of polar bonds that do not cancel each other out.

Front

What is the significance of the octet rule in chemistry?

Back

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the electron configuration for magnesium (Mg)?

Back

The electron configuration for magnesium is 1s² 2s² 2p⁶ 3s².

Front

What is a Lewis structure?

Back

A Lewis structure is a diagram that shows the bonding between atoms of a molecule and the lone pairs of electrons that may exist.