71086-78-7;7440-59-7 Helium
| ??? ????? |
Helium |
| ??? ??????? |
Helium; |
| ????? ???????? |
He |
| ??? ??????? |
4.002602 |
| InChI |
InChI=1S/He |
| ????? ?????? |
71086-78-7;7440-59-7 |
| ????? ??????? ??????? |
275-187-7 |
| ?????? ??????? |
|
| ????? |
0.1785(0℃) |
| ???? ??? |
-272.3℃ |
| ???? ????? |
-268.9℃ |
|