if by brothers and sisters you mean which elements have similar propertys then you only need to look at the column on the periodic table that copper is in. which would be silver and gold.
It is all aproved by Harvard university.
technetium -- Tc -- element 43prometheum -- Pm -- element 61{polonium -- Po -- element 84}astatine -- At -- element 85{radon -- Rn -- element 86}francium -- Fr -- element 87{radium -- Ra -- element 88}{actinium --Ac -- element 89}{protactinium -- Pa -- element 91}neptunium -- Np -- element 93plutonium -- Pu -- element 94americium -- Am -- element 95curium -- Cm -- element 96berkelium -- Bk -- element 97californium -- Cf -- element 98einsteinium -- Es -- element 99fermium -- Fm -- element 100mendelevium -- Mv -- element 101nobelium -- No -- element 102lawrencium -- Lr -- element 103 (originally the symbol for this element was Lw)rutherfordium -- Rf -- element 104dubnium -- Db -- element 105seaborgium -- Sg -- element 106bohrium -- Bh -- element 107hassium -- Hs -- element 108meitnerium -- Mt -- element 109darmstadtium -- Ds -- element 110roentgenium -- Rg -- element 111copernicium -- Cn -- element 112flerovium -- Fl -- element 114livermorium -- Lv -- element 116These are the "English names" rather than the "earth names".The elements in braces {} do not necessarily count as "alien" because they are present on Earth in small quantities.There have been recent claims for the preparation of elements 113, 117, and 118,but so far they have not been endorsed or named by IUPAC.
There are elemental compounds, but there is no such thing as a compound element.
No Perspex is NOT an element. It is a polymer called methyl methylacrylate. It is manufactured industrially and sold in the US under such names as Perspex, Plexiglas and Lucite
Mangenite is magneisum ore. Haemetite is iron ore. Malakite is copper ore. Bauxite is aluminum ore.
Manganese is a metalic element and does not have brothers or sisters.
what are the names of emma willards brothers or sisters
Her sisters names are Lovdy and Caroline and her brothers name is Garett
Do not know the names of Earvin Magic Johnson brothers or sisters.
henry hudson had 3 brothers and no sisters. his 3 brothers names where Christopher, Tomas and John.
Robert Boyle had seven sisters and four brothers. Their names were Frances, Joan, Katherine, Margaret, Mary, Anne, and Dorothy; and brothers Richard, Francis, Lewis, and Roger.
his parents names where something and something. his brothers names are something and something. his sisters names where something and something
2 of his brothers names are hermes and herccules
8 brothers and sisters
His sisters name was Authanort, and his brothers name was Tkyebarb
her sisters are Noah and Brandy . her brothers are Trace and Branson
Posideon,Hades=brothers....Hera,Demiter,Hestia=sisters