曾提議 Proposed, not adopted

Various

Characters proposed or used informally but never standardised.

Forms attested here (14)

• 氱 Oxygen O yǎng today 氧 yǎng interim form with the full 養 under 气 replaced
• 鈤 Germanium Ge rì today 锗 zhě clashed with the same character used for radium replaced
• 鎶 Niobium Nb gē today 铌 ní an early 20th-century character for columbium, reused for copernicium in 2010 replaced
• 釢 Neodymium Nd nǎi today 钕 nǚ later reused for neptunium, then dropped for both replaced
• 鎷 Samarium Sm mǎ today 钐 shān later reused for masurium replaced
• 鐽 Tantalum Ta dá today 钽 tǎn an early character for tantalum, reused for darmstadtium in 2003 replaced
• 鈪 Astatine At è today 砹 ài erroneous early form; 銰 also occurs replaced
• 鈤 Radium Ra rì today 镭 léi clashed with the same character used for germanium replaced
• 釢 Neptunium Np nǎi today 镎 ná had earlier meant neodymium replaced
• 銤 Americium Am mǐ today 镅 méi had earlier meant osmium replaced
• 鉨 Dubnium Db ní today dù for nielsbohrium, the Soviet name; 鉨 later went to nihonium replaced
• 鉨 Bohrium Bh ní today bō for nielsbohrium replaced
• 鈤 Nihonium Nh rì today 鿭 nǐ 日 for Japan; rejected because names follow Western sound replaced
• 鋐 Nihonium Nh hóng today 鿭 nǐ second syllable, as 鈧 does; rejected replaced