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𰚿

cjk unified ideograph-306bf

Former Radon Character

1728/4939

𰚿 represents 氭, an older Chinese name for radon, a radioactive gas; the current form is 氡. The old form is read dōng in Mandarin: 气 marks gas, and 東 gives the sound clue.

Text symbol

What 𰚿 means

𰚿 is the cjk unified ideograph-306bf. Unicode classifies it as a letter and files it in the CJK Unified Ideographs Extension G block; this site shelves it under Chinese, Japanese & Korean.

Its appearance depends on the font and text styling.

How it is encoded

𰚿 is a single code point, U306BF. In HTML that is 𰚿, and in CSS \306BF.

Who writes 𰚿

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Questions people ask

1

Why does 𰚿 show as a box?

Your app’s selected font may not include a drawing for this character. A missing-glyph box is a display failure, not a different character.

How to type or find 𰚿

Search it as
rn · radon · 氭 · 氡
Shows up in
Anything that takes text · its shape is whatever your font draws
Windows (Word)
⎇Alt+XType 306BF, then AltX to get 𰚿.
Windows
⊞Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win .).
macOS
⌃Control+⌘Command+␣SpaceOpen the character viewer and search “cjk unified ideograph-306bf”.
Linux
⎈Ctrl+⇧Shift+UType 306bf, then Enter or Space.
HTML
𰚿
CSS
\306BF
GNOME (2026)
Press CtrlShiftU, enter the hexadecimal value 306BF, then press Enter.
Codes and encoding1 code points
HTML decimal
𰚿
HTML hex
𰚿
CSS content
content: "\306BF";
Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.
URL encoded
%F0%B0%9A%BF
1
On screen
1
Code points
2
JS .length
4
UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

2

Chinese characters99,354 symbols

Chinese, Japanese & Korean121,370 symbols