Good question. Sulfur dioxide means there is 1 sulfur atom and 2 oxygen atoms, and is not giving any information about the valence or oxidation state. Think of this.... Carbon monoxide = CO and Carbon dioxide = CO2

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern -N---AD. That is, seven letter words with 2nd letter N and 6th letter A and 7th letter D. In alphabetical order, they are:

anyroad

instead

kneepad

onstead

untread

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern ---T-AD. That is, seven letter words with 4th letter T and 6th letter A and 7th letter D. In alphabetical order, they are:

bestead

footpad

hoptoad

instead

onstead

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 5 words with the pattern O--TE--. That is, seven letter words with 1st letter O and 4th letter T and 5th letter E. In alphabetical order, they are:

onstead

ousters

outtell

ovately

oysters

According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 3 words with the pattern ---TEAD. That is, seven letter words with 4th letter T and 5th letter E and 6th letter A and 7th letter D. In alphabetical order, they are:

bestead

instead

onstead