How many “dots” would the Lewis symbol for an atom of sulfur have?

How many valence electrons does O2- have?

A substance made of which of the following molecules would have the highest expected boiling point?

[diffusion] is how gases spread among each other; [effusion] is how gases escape through a hole in a container.

How many sigma and pi bonds are in the molecule below?  Hint: some bonds may be hidden! [sigma] number of sigma bonds. [pi] number of pi bonds

Draw the Lewis structure for the chlorine-containing ion ClO2- .Answer the following questions about the CENTRAL ATOM:It has [bonds] bondsIt has [lonepairs] lone pairsIt bears a [charge] formal chargeIt [octect] the octet rule

What is the formula for the compound formed with magnesium and iodide ions?

What is the oxidation number of carbon in the bicarbonate ion, HCO3- ?

In the chemical equation below, in the direction in which it is written, which is the reducing agent? Sn2+ + Br2 –> Sn4+ + 2Br-

What is the correct name for KCN? [anion][cation] choose the correct cation and anion.