Chemical element meaning "no life") for "nitrogen". For purposes of international communication and trade, the official names of the chemical elements both ancient and more recently recognized are decided by the International Union of Pure and Applied Chemistry (IUPAC), which has decided on a sort of international English language, drawing on traditional English names even when an element's chemical symbol is based on a Latin or other traditional word, for example adopting "gold" rather than "aurum" as the name for the 79th element (Au). IUPAC prefers the British spellings "aluminium" and "caesium" over the U.S. spellings "aluminum" and "cesium", and the U.S.
Au pair well as an insurance for potential repatriation costs for the au pair. In Belgium, an au pair is entitled to at least 450 euros pocket money per month, deposited to her bank account. The au pair is entitled to the full amount of monthly pocket money in cases of illness and during holidays. Au pairs are not allowed to work more than 4 hours a day (babysitting hours included) and 20 hours per week, spread out over a maximum of 6 days a week. Au pair are entitled to at least one day off per week and at least one