I was told that the Unicode atom symbol ⚛ (which appeared in my previous post) is not represented correctly in other browsers, or, indeed, other PCs. This is because not all PCs have the fonts installed that can show these characters; or even when the font is there, one has to tell the browser to use it, e.g. <font>⚛</font>. That’s annoying.
Given a number of various symbols present in Unicode, I am surprised how little of them are genuinely related to chemistry, without having any other meaning. In fact, just three. Two of them, ⌬ and ⏣, mean the same and are quite useless — I’d prefer them rotated 90° so one could attach them by “bonds” to something else inline. The third, ⚗, means “chemical term” (in dictionary etc.); the scales, ⚖, even though may appear related to chemistry, really mean “legal term”. See the little table below for these and a few others which may be of some chemical relevance.
|☉||SUN||U+2609||☉||☉||Sun (astrology) or gold (alchemy)|
|☽||FIRST QUARTER MOON||U+263D||☽||☽||Moon (astrology) or silver (alchemy)|
|☿||MERCURY||U+263F||☿||☿||Mercury (astrology) or mercury (alchemy)|
|♀||FEMALE SIGN||U+2640||♀||♀||Venus (astrology) or copper (alchemy)|
|♁||EARTH||U+2641||♁||♁||Earth (astrology) or antimony (alchemy)|
|♂||MALE SIGN||U+2642||♂||♂||Mars (astrology) or iron (alchemy)|
|♃||JUPITER||U+2643||♃||♃||Jupiter (astrology) or tin (alchemy)|
|♄||SATURN||U+2644||♄||♄||Saturn (astrology) or lead (alchemy)|
|⌬||BENZENE RING||U+232C||⌬||⌬||Benzene ring (Kekulé structure)|
|⏣||BENZENE RING WITH CIRCLE||U+23E3||⏣||⏣||Benzene ring (delocalised)|
|☠||SKULL AND CROSSBONES||U+2620||☠||☠||Poison (chemistry etc.)|
|⚛||ATOM SYMBOL||U+269B||⚛||⚛||Nuclear installation|