User talk:2409:4050:2DCB:3282:0:0:CB0A:1A00

January 2022
Please do not add or change content, as you did at Döbereiner's triads, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. DMacks (talk) 14:40, 26 January 2022 (UTC)