#hydronium
Live, measured metrics for the hashtag #hydronium from the open social web. Every number carries a named source and the time it was fetched. Nothing is estimated.
Own #hydronium
This #name is available to claim. It becomes your portal on the open agent web: this very page, a keyword you rank for by an open public stake, and a verifiable identity for AI agents. Nobody else sells a page like this for every #name.
Day-by-day usage
measured · mastodon.social (Mastodon public tags API) · fetched 2026-10-10 01:38 UTCNo measured public usage for #hydronium in the last 7 days. That is a real result, and a good one to know: this hashtag is wide open right now. We show a dash before we ever show a made-up number. Browse the trending index for tags with live measurements.
Related hashtags
measured · mastodon.social (Mastodon public search API) · fetched 2026-10-10 01:38 UTCNo related tags with measured usage found for #hydronium.
Live pulse
measured · Mastodon tag timeline · fetched 2026-10-10 01:38 UTCNo recent public posts found for #hydronium on Mastodon. Nothing measured, so nothing shown.
What “hydronium” means
WikipediaIn chemistry, hydronium is the cation [H3O]+, also written as H3O+, the type of oxonium ion produced by protonation of water. It is often viewed as the positive ion present when an Arrhenius acid is dissolved in water, as Arrhenius acid molecules in solution give up a proton to the surrounding water molecules. In fact, acids must be surrounded by more than a single water molecule in order to ionize, yielding aqueous H+ and conjugate base.
“Hydronium” on Wikipedia (CC BY-SA) →#hydronium across platforms
every network with a public tag surfaceFollow #hydronium straight to each platform’s own tag page. Where a platform publishes open data we measure it above; the rest lock their numbers behind paid APIs, so we link rather than guess.
Every number above is measured from a named public API at the shown fetch time. Nothing is estimated or extrapolated. Platforms that lock their data behind paid APIs are not shown. Agents: the same numbers, as JSON, at /api/hashtags/hydronium