Related Clues:

• Variant form of element
• Iridium contains a considerable amount of a similar substance
• Variant of element
• I drink to such excess, there's elementary variation in it
• One of different compounds of same formula
• Compound with same atoms as another but different structure
• One form of element, differing in its neutrons from another
• Retiring supremo signs selection for alternative arrangement of small parts
• Compound of identical atoms to another but in differing arrangement
• One form of an element
• Compound with same formula but not structure
• A few held in Irish compound
• Form of an element
• Compound of same formula as another but differing in properties
• Compound is more complicated