Q2 (H. Chem) Midterm Review 2

Front

What is the significance of Roman numerals in naming compounds?

Back

Roman numerals indicate the oxidation state of transition metals in a compound.

Front

How many valence electrons does phosphorus have?

Back

Phosphorus has 5 valence electrons.

Front

What type of bond is formed between sodium (Na) and fluorine (F)?

Back

The bond between sodium and fluorine is ionic.

Front

What is the formula for lead(IV) sulfite?

Back

The formula for lead(IV) sulfite is Pb(SO₃)₂.

Front

When naming a compound that starts with a transition metal, what must be included?

Back

A Roman numeral must be included to indicate the oxidation state.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the formula for a compound formed from potassium and fluorine?

Back

The formula is KF.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons is determined by the group number of the element in the periodic table.

Front

What is the name of the compound with the formula PbO?

Back

The name of the compound is lead(II) oxide.

Front

What is the charge of a sulfate ion (SO₄²⁻)?

Back

The charge of a sulfate ion is -2.