Chemical element whole number. For example, the relative atomic mass of chlorine is 35.453 u, which differs greatly from a whole number as it is an average of about 76% chlorine-35 and 24% chlorine-37. Whenever a relative atomic mass value differs by more than 1% from a whole number, it is due to this averaging effect, as significant amounts of more than one isotope are naturally present in a sample of that element. Chemists and nuclear scientists have different definitions of a "pure element". In chemistry, a pure element means a substance whose atoms all (or in practice almost all) have the
Greek Cypriot name Greek Cypriot name Greek Cypriots may bear common Greek surnames, but there are some which are markedly Cypriot; there are some names which indicate place of birth or origin, or occupation, for example: "Παφίτης" (Paphitis), "from Paphos"; "Καϊμακλιώτης" (Kaimakliotis), "from Kaimakli"; "Σκαρπάρης" (Skarparis), "shoemaker"; "Κωμοδρόμος" (Komodromos), "smith". As most Cypriots used patronymics until independence when surnames became officially used in public registers, a similar process of creation of surnames took place to that of other Greek-speaking populations outside Greece, e.g. the Pontians. A good example would be "Ευσταθιάδης" (Efstathiades). In keeping with older traditions of Greeks, Cypriots often have as