In empirical formulas, these proportions begin with a key element and then assign numbers of atoms of the other elements in the compound—as ratios to the key element.
Dǎɣ tabaraten ən təɣirmaten, iɣilan asintan fal harat iyan itbatan əd hakan agudiyan haditan ən atometan ən niyad haratan dǎɣ tartit - dǎɣ tumast ən salan ən harat wa atiwasanan.