Period 7 element

A period 7 element is one of the chemical elements in the seventh row (or period) of the periodic table of the elements.

This period contains the heaviest element which occurs naturally on earth, uranium. Subsequent elements in the period have been synthesized artificially. Whilst some of these (e.g. plutonium) are now available in tonne quantities, most are extremely rare, having only prepared in microgram amounts or less. Some of the later elements have only ever been identified in laboratories in quantities of a few atoms at a time.

These are:

عناصر الدورة السابعة Elementos del periodu 7 Elements del període 7 Periode-7-Element Elementos del periodo 7 Elemento de periodo 7 7. periodoko elementu Éléments de la période 7 7주기 원소 Elementi del periodo 7 Elemeent del períut 7 Periode-7-element 第7周期元素 7. perióda 7. периода хемијских елемената 7. perioda hemijskih elemenata கிடைக்குழு 7 ธาตุคาบ 7 Chu kỳ nguyên tố 7 7. periyot elementleri 第7周期元素