Which of the following pairs of formulas have the same empirical and molecular formulas?
a. c2h4o2 and ch20
o b. ch2 and ch4
oc. c6h6 and ch4
od. co2 and so2

Gallium melts near room temperature and has one of the largest  liquid  ranges of any metal, so it has found use in high temperature thermometers.

Atomicity occurs to prevent updates of the database occurring only partially, which can cause greater problems than rejecting the whole series outright.some are monatomic, diatomic, triatomic etc because it shows the number of atoms. for example, monatomic means it contains only one atom.