esker chem exam 4 prep for memorization questions

Which of the following properties would you expect to find in a small, nonpolar molecule?

Gas at room temp

A bond formed between a silicon atom and an oxygen atom is likely to be ____.

polar covalent

What is the formula for sodium sulfate?

Na2So4

What is the basis of a metallic bond?

the attraction of metal ions to mobile electrons

Which of the following is true about the melting temperature of potassium chloride?

Melting point high because charge between 2 is great

Which of the following compounds is an exception to the octet rule?

Bh3

Ate - oxyacid ending

Ic

Ite - oxyacid ending

ous

Identify the shortest bond.

triple covalent bond

Which type of formula best specifies how atoms bond in a molecule?

structural

Which of the following particles are free to drift in metals?

electrons

In a bent molecule, such as hydrotelluric acid, what are the bond angles?

105

It is an mixture of atoms in which some of the original metallic atoms have been replaced by atoms of a similar

size.

substitutional alloy

How many of the following molecules are polar? XeCl2 COF2 PCl4F SF6

3

According to VSEPR theory, molecules adjust their shapes to keep which of the following as far apart as possible?

Pairs of valence electrons

Which of the following occurs in an ionic bond?

Oppositely charged ions attract

Alloys are important because

Their properties are often superior to those of their component elements.

Which is a physical property of ionic compounds in their solid state?

high melting point

Which is true of binary ionic compounds?

They consist of atoms of only two elements.

What information does a molecular formula provide?

the number and kind of atoms present in a molecule

Hybrid orbitals are

mixed orbitals

A bond that is not symmetrical along the axis between two atomic nuclei is a(n

pi bond

Which of the following elements can form diatomic molecules held together by triple covalent bonds?

nitrogen