Possible Clues:

• I will be recognised as one in the chemistry group
• Light-bulb type
• A look into hotel information could be a source of illumination
• At or I
• Element adding aura to army officer
• One of group of five elements (used in this type of lamp)
• Such as fluorine, chlorine or bromine
• Cheap lamp
• Female carrying a lump of wood for lighting, for example
• Type of lamp that may replace incandescents